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The LEXIN B4FM Motorcycle Bluetooth Headset is a rugged, IP67 waterproof dual-pack communication system designed for up to 10 riders within 1.2 miles. Featuring Qualcomm Bluetooth 5.0, 15-hour battery life, noise-cancelling microphones, and universal helmet compatibility, it delivers crystal-clear calls, music sharing, and FM radio—perfect for millennial riders craving seamless group connectivity and premium audio on every adventure.










| ASIN | B07DGX2DTK |
| Additional Features | 10 Riders Bluetooth Intercom, FM Radio, IP67 Waterproof, Music Sharing, Universal Pairing |
| Age Range Description | Adult |
| Antenna Location | Cycling |
| Audio Driver Type | Dynamic Driver |
| Battery Average Life | 15 Hours |
| Battery Charge Time | 2 Hours |
| Best Sellers Rank | #25 in Powersports Bluetooth Headsets |
| Bluetooth Version | 5.0 |
| Brand Name | LEXIN |
| Built-In Media | B4FM Main Unit, Speakers&Mic Kit, Bracket Kit, User Manual |
| Cable Features | Without Cable |
| Color | Blue, Black |
| Compatible Devices | Cellphones |
| Connectivity Technology | Bluetooth 5.0 |
| Control Method | Touch, Voice |
| Control Type | Button Control |
| Controller Type | Button |
| Customer Package Type | Flat Free Package (FFP) |
| Customer Reviews | 4.3 4.3 out of 5 stars (5,395) |
| Earpiece Shape | Circle |
| Enclosure Material | Acrylonitrile Butadiene Styrene (ABS) |
| Frequency Range | 87.5 MHz - 108.0 MHz |
| Global Trade Identification Number | 00711765795826 |
| Headphone Folding Features | On Ear |
| Headphone Jack | Type-C |
| Headphones Ear Placement | On Ear |
| Impedance | 80 Ohms |
| Item Weight | 0.5 Kilograms |
| Manufacturer | LEXIN |
| Model Name | LX-B4FM |
| Model Number | LX-B4FM |
| Noise Control | Active Noise Cancellation |
| Number of Items | 2 |
| Specific Uses For Product | Motorcycle Intercom |
| Style Name | B4 Dual Pack |
| Theme | Sports |
| UPC | 711765795826 |
| Unit Count | 2 Count |
| Warranty Description | Two-Year Warranty |
| Water Resistance Level | Waterproof |
| Wireless Technology | Bluetooth |
M**A
These WORK well!
If you are looking at helmet communication / Bluetooth devices, these are an excellent choice! I was very skeptical at purchasing a "cheap Chinese" Bluetooth comm unit and was leaning towards the Cardo FreeCom 2+. But, after reading every review I could find on Lexin products, I went with it. I am VERY pleased with this purchase because it works well! -Easy to install on my Fly Conquest helmet. -Easy to pair! Paired to my iPhone 6s with no issues, very quickly. And, quickly and easily paired with the 2nd Lexin unit I bought (duo). -Paired and works well with a different brand integrated Bluetooth helmet that I own. -Volume is incredible! I have hearing loss from my job and I have NO issues with the volume output of these. In fact, I had to turn down the volume because it was way too loud at first. I typically run it at 1/2 - 3/4 volume. -Intercom (rider to pillion) was excellent and had no issues hearing when speaking in a normal conversation tone while traveling at 65 MPH with face-shields partially open. When the face shield is closed it is crystal clear. -Phone calls are crystal clear with little to no wind noise (used with a Fly Conquest full-faced helmet). I received a call from my wife (driving her car) and me on my bike traveling 65 mph and had no issues communicating or hearing each-other in normal voices. -Audio quality is decent. I did not expect Bose, Klipsch, Sennheiser or Beats quality sound from this unit. However, the sound quality is not bad when fitted well in your helmet. It takes a little work for positioning the speakers to get them in the right location (directly over the ears). But, It makes a huge difference in sound quality. I noticed that sound quality drops exponentially when the speaker is not directly over / covering the ears. So, be sure to position them correctly and I am sure you will be happy with the sound quality, for what these are. I ride a sport-tourer with stock exhaust. I have read in some reviews that they "are not loud enough to hear over the exhaust..." that is ridiculous. If this is the case the exhaust is too loud. Period. If I had to make an educated guess, this came from a V-Twin cruiser with custom exhaust and or straight pipes. I am very happy with these units and I am please with the purchase. I would recommend them without hesitation.
M**.
Awesome value
I was doing a ton of research on which helmet Bluetooth/intercom to get and of course the Sena ones kept coming up as the best and so no and so forth. I was ready to pull the trigger on SMH10-11 due to the it being reviewed for better sound quality/volume in the helmet, but just as I was about to I stumbled onto these in a review. I look them up and lots of reviews about this product are ex sena users whose devices broke and they opted for this cheaper option. I was sold and happily made the purchase to get two units for the price of one Sena. So about these: Setup: Took a sec in my first helmet, there aren't very clear directions about where to put the speakers or how to run them in the helmet so for my first helmet I didn't use any of the velcro/adhesive until I knew how it sounded and was sure I was right. I put the left one right behind the left ear pad, tried to run the wire behind the padding as much as I could up to over the head and put the right behind the right ear pad. The unit comes with both the boom and wired mic so you can choose whichever fits your helmet style. You can use either for a regular full face, but have to use the boom for open face/ modular ones. I choose the cable one since it was a regular full face, fan it up to right in front of my mouth and used some electrical tape to just hold the wire on the helmet so the mic flops around a bit but stays mostly in front of my mouth. After that pairing with my phone and use was easy. After installing it on the first helmet, the second was much easier. However, I will note that since the second helmet was brand new, and the first was about 12 years old, the second helmet had little cutouts behind the ear pads to specifically put speakers. It also allowed all the padding to move around so it was much easier to hide the wires completely behind the padding. This helmet was a modular helmet so it needed the boom mic. It was pretty straight forward. One other thing, not sure if this is due to manufacturer or age, but the first helmet the side where I needed to mount the unit wasn't flat so it makes it wobble a bit, the second unit it's perfectly flat so the unit sits snuggly on the side of the helmet Sound Quality: Once paired up I cranked the volume up standing in the living room to see how it sounded with my speaker placement. They got pretty loud but crackled at high volumes. There's not a lot of low end on these so any bass heavy songs will sound like a phone speaker kinda. I made a call and the person on the other end was ringing through loud and clear and they could hear me as well. Next I hopped on the bike and took it up to highway speeds. I noticed I could barely hear the music and definitely couldn't hear phone calls. However, people on the phone said they couldn't hear the bike or wind and I was crystal clear. I figured the situation might have been due to my speaker placement. I got back home, shifted the speakers around a bit and tried again. This time, much better audio quality all around. On the second helmet I haven't tried the road test as yet since it came in a bit later and it's winter now so it's harder to find comfortable days to go out. Intercom: Intercom setup was a little confusing at first, but I attribute that to me misunderstanding the directions. I believe the two units come paired already out the box and in trying to set them up I unpaired them. I then re-paired them following the directions in the book and tested them out. Initially the second unit the sound wasn't coming through to the first, but it was because we were testing in the house and the second person wasn't speaking loud enough to get over the noise cancellation of the mic. Once they started speaking louder as you would on the bike, everything came through loud and clear. I haven't been able to try the pairing on the bike because as stated above it's still winter and is hard to find good days to ride. Conclusion: So far I'm definitely happy with this purchase. The price for two units was cheaper than a single Sena. The sound quality seems to be pretty awesome so far. The setup was pretty easy, the Bluetooth is easy to operate the voice commands. The buttons are raised and are distinct enough to be easily identified and pressed. I'm excited to test this on longer rides with both units on. P.S. I also have a newer helmet coming in and I'll transfer the unit from my first helmet to this one and see if It improves the audio quality more.
J**O
Used with a Bell Qualifier DLX and HJC i10 helmet. Quick recap, I originally picked up a VNETPHONE V6 Pro set about 2 weeks before based on a family member's recommendation. He is using one and likes it, so I ordered one in (dual set) because my wife and I had planned a 450km motorcycle trips planned out. In short, we had a hard time pairing the VNET V6 units, we had to reinitiate the units after each shut-off, unlike my cousin's unit. So we just kept them turned on all the time. During most of the trip, we always had a hard time understanding each other. Lots of noise/static, poor audio and the moment we got to far apart... signal was toast! Not a bad unit but not the one for me. A good friend suggested the Lexin B4FM units and he is using them in out in the woods on his 4x4's. I ordered up a set because I was already returning the VNET's and I can always trust his opinion on any gear that we are both into. A worthy quick mention, Lexin as two versions of the B4FM units being sold. Easy enough to tell them apart. Both have different communication buttons. One version has a "helmet" type button and the other a "X" button. We got the "X" version. Also, both have different mounting systems and pairing methods. Would be nice to have the same units shipped out or at least, have them use the same mounting clips and pairing info. Packaging: When the Lexin units arrived, I was immediately impressed by the packaging alone. There was more detailed information on the box and on the inside, the instructions manual was nice and clear and the inner packing was awesome! Each piece and component had its own ziplock bag, not all tossed into one bag and here ya go! The little things usually give a good idea of what to expect. Installation: It was simple but had me slightly worried. Most videos we watched online for the B4FM is not the same as my units, as mentioned above about the two models. The online videos show a big paper clip type of system for the install versus mine was a 2pcs metal/plastic clip you tighten up together between the shell. It comes with an additional 3M rubber sticker and would strongly suggest adding that extra rubber over the one on the metal clip to ensure a tighter fit. If you don't, our bracket could come off easily... this might be my only complaint on these. So all depending on what unit you receive might be a little bit confusing. B4FM unit: If you follow the instructions, easy to use. Because of the two versions going around, you can't base yourself on the Youtube clips and wrap it up... unless of course, you received the same version. But using the units, pairing your phone (Samsung Android) was a breeze, using the FM radio was simple and pretty good reception. The option of being to save up to 6 channels is a nice touch! The B4FM unit connects up to 4 users at once, I haven't tested that. But pairing up our two units was easy enough and ALWAYS had a steady connection... Audio Quality: Being an audiophile myself I like good sound. But having something this small at this price point, I can't complain. Yes, the sound is a little thin and high on mids the treble, it could use a little more bass to beef up the tone (bigger speakers) but you can always adjust your cell phone EQ's audio to help out. I did and went with 2 custom settings and it was a good improvement. I also tried it out with different types of music and artists (Al Green, ZZ Top, Monster Truck, Black Label Society, CCR, Slayer, Sade and a few others) and adjusted the EQ and rolling up the bass helps. See pics that worked well for me in my setup. Intercom: I was really, really impressed. Cruising at lower speeds 40kmh to 60kmh audio communication was clear . Going from 65kmh to 110kmh, even with our visors open we had no issues hearing one another... unlike the other unit I mentioned. The noise cancellation system in these really seems to work well. No complaints whatsoever on this aspect. We intentionally split up to increase the distance between us to test Its reach/limit... and if I had to guess, we reach approximately a 1.2km apart (1200 meters) we still talked and understood each other fine. Pushed beyond that and we encountered static... my wife said I cut in and out at that distance. We might have been at 1.6km (1600 meters) as claimed by Lexin but I can't be sure... riding at 100kmh we gaged the distance. So IMO, that is incredible! In a normal situation, we would never be that far apart anyway... so the B4FM passed that test with flying colors! Battery life: Impressed to say the least. We had our units turned on for 9.5hrs straight... didn't turn them off once. I got home last night after our ride and kept playing around with the unit. Pairing up my phone, listening to music, testing out the GPS on the phone with the unit and this morning the batt level is still at 100%!! Manual: Read it carefully, don't skip certain procedures and you won't have an issue... its very a simple KISS manual. Overall, I would HIGHLY recommend the Lexin B4FM to ANYONE on a budget looking for a great unit. It obviously isn't one of those other higher-priced brands that are over $300 + for a single intercom unit. The B4FM doesn't have the same technology and doesn't have the same cool "MESHY" features and the other jazz... but at $207 CDN for a two headset kit, this little unit holds its own and does it oh so well! In fact, If I had the extra money, I would love to try out ALL of Lexin's products... I am very impressed to say the least. Safe riding everyone!!
D**Y
Excellent com-system for the price. Took a bit of fiddleing to get the speakers to sit comfortable, but sound quality is good (and loud), the mic works well, and is a quality product. I recommend it.
M**O
La intercomunicación con otro conductor, muy fluida sin interferencia, otra manera de conducir moto
F**C
J'ai acheté 2 kit complet de marque lexin pour la motoneige. Un premier kit B4FM et l'autre G16. Les 2 différents modèles peuvent se coupler ensemble sans problème. Les micros sont identique dans les 2 modèles mais les écouteurs (protecteurs en mousse) sont de qualité supérieure dans le G16. La lumière du G16 est particulièrement pratique. Le couplage se fait facilement une fois qu'on a bien compris le principe. Lire attentivement les instructions et se pratiquer avant votre "ride"! J'ai essayé jusqu'à 3 personnes et cela fonctionne bien. Il est important de respecter l'ordre de couplage et de rester dans cet ordre pendant la randonnée dans la mesure du possible. Puisque les appareils marche "en chaine" si le premier accouplé se retrouve à l'arrière du peloton, la communication avec le deuxième accouplé (et donc tout le reste du groupe) sera coupée. La distance pour communiquer entre 2 différents appareils accouplés est d'environ 300/600 pieds et est affecté à la baisse par les maisons et collines. Dans la majorité du temps cela est suffisant. C'est une technologie bluetooth, ce n'est pas un radio de type walkie-talkie. Donc vous comprendrez que si vous avez 3 appareils accouplés, la distance entre le premier et le troisième appareil (le deuxième appareil relais l'information du premier vers le troisième) peut être d'environ 600 pieds. Si 4 appareils 900 pieds etc... (distance peut être plus grande, je suis allé pessimiste dans de mauvaises conditions) Lorsque 2 personnes connectées ensemble s'éloigne trop, la communication se coupe. Par exemple si le #1 s'éloigne trop de #2, alors #1 perdra la communication avec #2 et #3. L'appareil #2 et #3 peuvent continuer à communiquer ensemble. Une fois #1 revenu à une distance raisonnable de #2, alors l'appareil rétablie la connexion automatiquement avec ses 2 confrères. Il faut toujours garder en tête que les appareils marchent en chaîne et chaque appareil relaie l'information à l'autre. La qualité sonore est bonne. Dépendamment l'emplacement du micro dans votre casque, la qualité diffère. Pour ce qui est du sons lorsqu'on écoute de la musique, la qualité est moyenne mais ça fait le travail. On ne peut pas parler aux autres en même temps de partager la musique. C'est un choix. Tu partages aux autres ou tu leur parles. De ce que j'ai testé, c'est 2 modes différents. On entend peu les bruits des autres motoneiges. Pour ce qui est du G16 (je n'ai pas essayé avec le B4FM) j'ai réussi à être connecté avec 2 autres personnes et d'être connecté en même temps à mon cellulaire. Cela fonctionne très bien. Lorsqu'on reçoit un appel et que je suis en communication avec mes partenaires, j'entends seulement un "bip" d'environ 1 seconde. Rien d'autre par la suite... Il faut donc être attentif sinon on manque l'appel. Il faut appuyer sur le bouton "power" 1 fois et la communication coupe avec les partenaires pour répondre l'appel. Le répondeur automatique des appels après 12 secondes est inutile puisque ma boite vocale de téléphone embarque avant que l'appareil réponde automatiquement. Finalement pour ce qui est de la résistance au froid, je suis très surpris. Très efficace au froid. Nous avons fait une "ride" de 4 heures à -29°C sur le thermomètre et tous les appareils ont bien fonctionnés.
J**Y
The Lexin B4FM is reminiscent of another budget bike intercom that I bought a few years back... but in practice, the Lexin ticks boxes the former didn't. The wind noise suppressing microphone was the best surprise here. Receiving a test phone call from my wife, proved clear & background noise free. Even with our open-face helmet's visors open! The only negatives to the call were, the speaker's sound is thin...(as in, no bass!) & could have been a bit louder. In the kit, they've provided 6mm ear speaker spacers, which pads them closer to your ears(if you have the room). This fixes the air gap & helps with sound loss. Even at max volume, the speakers don't distort, but again not the best sound. Also, I'm not a fan of the FM radio & its channel scanning. *** edit! I've sourced the new version ear speakers...update shortly *** The kit includes a clip which attaches the intercom unit to the outside of the helmet. For me, it worked nice & firm. Also really sticky velcro pads, which adhere the mic stem & ear speakers to the helmet's insides, for supposedly easily removal... they've come unstuck pretty quickly... so clean surfaces must be found, for a good permanent assembly. The battery seems too good to be true! I'll have to try a massive ride one day, to prove its longevity, cause we've not seen them go flat yet! All in all, I'm happy with my purchase & my wife/pillion, who totally hates bad sound equipment & was the biggest challenge, has also accepted them. 3.5 Stars - Mostly Recommended.
Trustpilot
1 week ago
2 months ago