

⚡ Grind smart, live fresh — elevate your spice game effortlessly!
The Banana Bros OTTO Electric Smart Spice Grinder is a rechargeable, USB-powered automatic herb grinder featuring advanced sensor technology that adjusts grinding speed and pressure for consistent, aroma-preserving results. Crafted from aerospace-grade aluminum, it offers a compact, modern design with a complete accessory kit (excluding carrying case) to ensure precision milling and mess-free filling, perfect for millennial professionals seeking efficiency and style in their culinary tools.









| Best Sellers Rank | #37,484 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #55 in Herb & Spice Mills |
| Brand | BANANA BROS |
| Color | Black |
| Customer Reviews | 4.1 out of 5 stars 1,770 Reviews |
| Is Dishwasher Safe | No |
| Item Weight | 470 Grams |
| Material | Aerospace Engineered Aluminum |
| Operation Mode | Automatic |
L**S
Electronic cone grinder and filler
Honestly I was a little worried when I first got this product but since I've had it for almost a year it's honestly really handy as long as you take care of it and don't treat it like a normal regular metal grinder. It's super easy to use clean up is a little bit more difficult but not too bad they give you a brush but I found if you get a paintbrush with the long skinny tip it works better. The size is not too bad you can fit it pretty much wherever you need to. The grind quality is honestly awesome I'm never had one of my cones to lose or to packed of course after it loads it you have to pack it and it's up to you but buy that time it's honestly really awesome grind. I don't use very bad stickiness stuff in it because it is electronical I try to use more of a dryer substance so it's easier to clean up and not caking to it.
A**R
Nice new look and grinding
Love it rolls really quick and it’s pretty quiet so far so good no complaints great quality for the price very easy to use and clean and stylish might get the gold one next
M**E
Third time changing my review .
This is my third review. I've had it for Less Than 3 months and it stopped working. It makes a loud winding slash screeching noise and does not move the grinding mechanism. I'm still well within the one-year warranty. But outside of the one month return. Amazon told me to contact banana Bros through amazon. I contacted them and they wanted a picture of my device which I posted. From that point on I've never heard from them. Very very sad customer service. Amazon had to step in and make it right. Would still cost me a restocking fee but at least I'm not down 160 bucks in total. When the machine was working it was the best automatic grinder I found. But for 160 bucks in the last Less Than 3 months that's ridiculous. Far from the best. So do not buy! I needed this grinder because I had hand surgery. The first one I purchased constantly shut off for no reason. I found out that the rod was that long enough to fully close the limit switch so the grinder knows it's closed. Clearly if all the unit so I returned it. My new grinder works much better but still has its issues. The stuff I'm grinding up is usually a little bit dense. I'll put a nickel size bud in the grinder and there's times the unit cannot handle it. It will try for a bit and then shut off. You either have to wait a minute or two to turn back on or plug in the power cord real quick and unplug it and then you can finish grinding that piece. There's times I put two of them in there and it works fine. They definitely need a bigger battery and probably a stronger motor. And it uses a micro usb to charge. It should definitely be a type-c. I lowered it to three stars because the batteries charge is getting worse.
V**A
“Tips” on how not to hate this product
Works as advertised, so what it cost more. I like the look and it works, so it’s worth it. Sometimes I have to plug it in to turn it on and I seen others say the same so that’s something hopefully these “Banana Hoe’s” fix that problem. “Tip’s” on not how to hate this product. #1-keep it clean (I clean it after every 2 sessions of 10cones each sesh) #2-don’t slam it like an animal when packing the cone (others complained it’s cheap.smh) #3-don’t pack a whole “O” and other things in your case and maybe your zipper wouldn’t break off when you close it like a moron (others complained the zip rips off) close it like a normal person and follow other steps and you’ll be good. Yup it cost more than others that do the same thing but so does a Benz you know what I’m getting at So it’s a good product, shout out to Banana Hoes!
M**.
The good, bad and Ugly
Now to my review of the auto roller. I’ll start with the good then to the bad. The good. :It rolls joints :Supper high quality moldings on the plastics with a nice anti stick almost soft plastic texture. That part is expensive to manufacture so big points to that. The fit finish alone makes me know this is not a cheap item. :It’s a well thought out unit. (See the pic with this text). In the open position the hinge is maxed open but rests perfectly on the table like dead nuts perfect. Again making it feel like it’s a premium product. :I’ve ran around 1/3 ounce through it and it’s to the point it needs to be cleaned. Still works fine so points. :I’ve never had to unclog it or have it not grind all the bud. :The preprogrammed grinding sequence it does is very smart. Almost makes you think it’s getting feed back and changing how it grinds based on load…not the case but still points for making me think that’s a possibility The bad. :Battery life is not the best you get around 6-10 joints per charge over 2-3 days in my experience. Not terrible but not great. :It does not work while plugged in and charging. I’m going to go on a rant on this topic but it’s pretty unacceptable for any DC product to not work while plugged in and charging. It’s a $0.03 one way mosfet to add that functionality. :It uses a micro usb as the charging port. It’s 2025 and we got Apple to use type c. Everything should be type c.
A**R
It’s a game changer
I really love this product. I’ve been looking for one for a very long time and I finally found one thank you. I recommended to everybody who enjoy smoking it’s done in less than a minute. I don’t know what I did without it.
A**R
Easy to use!!
This product is totally worth the money. The quality of the grind is awesome and continues an even burn. Cleaning is just as simple and the size is amazing so I can carry it anywhere I go. It does have a bit of a cheap feeling but one out of 10 I would definitely give it a solid 9.
C**S
Love it!!
Got this for my mom as a a Xmas gift. She's 55+ and hates rolling her joints and breaking down her stuff. This does it for her in seconds and keeps her hands clean. Great gift
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