If i use this in the car will i get the high pitched electric buzz while charging?

High pitch noise when charging but not when unplugged

Do i need to turn it on and off when not in vehicle?

Hello! This Bluetooth receiver will automatically turn off when not pairing in 5 minutes. And its Bluetooth signal range is 33 feet. So if you leave this product in car, and take your phone away over 33 feet. It will automatically shut down after 5 minutes because of no Bluetooth device connected. However, in daily use, you may turn it on/off as you like or according the real situation. Hope this answer could help! Thank you!

Is it possible to disable the voice that says "maximum volume"?

No, that is built in software.This is a simple device.

Comsoon Bluetooth Receiver For Car Noise Cancelling 3 5mm Aux

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

🚗 Elevate your drive: wireless sound, zero compromises.

DUAL DEVICE PAIRING - Connect two devices simultaneously and never miss a call or beat, effortlessly switching between work and personal life.
ALL DAY AUDIO FREEDOM - Up to 16 hours of uninterrupted music or calls with quick 2.5-hour Type-C charging—stay powered through your busiest days.
SAFE NAVIGATION ALERTS - Built-in mic and voice broadcast support keep your eyes on the road with hands-free calls and real-time navigation prompts.
SEAMLESS WIRELESS UPGRADE - Transform any AUX input into a Bluetooth powerhouse—no expensive stereo overhaul needed.
CRYSTAL CLEAR CALLS ON THE GO - Advanced CVC8.0 noise cancellation and DSP tech block out road noise for flawless hands-free conversations.

The J22-Bluetooth Car Receiver (Silver) is a compact, plug-and-play Bluetooth 5.0 adapter that converts any AUX-enabled car stereo or speaker into a wireless audio hub. Featuring intelligent CVC8.0 noise reduction, a built-in microphone for hands-free calls, dual device connectivity, and an impressive 16-hour battery life with fast Type-C charging, it modernizes your audio experience without costly upgrades. Perfect for professionals seeking seamless, high-quality sound and safe navigation on the move.

Specifications

ASIN	B08KY684PB
Additional Features	3.5mm AUX Port, Navigation, Long Battery Life, Built-in Mic, Bluetooth to Aux, Car Audio Adapter, Hands-free Calling, CVC8.0 Noise Cancellation, Digital Signal Processor, Intelligent Noise Reduction, Bluetooth 5.0, Auxiliary Bluetooth Adapter
Audio Input	Microphone
Audio Output Mode	Stereo
Audio Output Type	Headphone
Battery Charge Time	2.5 Hours
Battery Type	Lithium-Ion
Battery Weight	0.07 Grams
Best Sellers Rank	#1 in Bluetooth Car Kits
Bluetooth support?	Yes
Brand	COMSOON
Built-In Media	1 x 3.5mm AUX Cord, 1 x 3.5mm Male to Male Connector, 1 x Bluetooth AUX Car Adapter, 1 x Type-C Charging Cable, 1 x User Manual
Color	Black+Silver
Compatibility Options	Smartphone, Tablet, Laptop
Compatible Devices	Laptop, Smartphone, Tablet
Compatible with Vehicle Type	Car
Connectivity Technology	Bluetooth
Connector Type Used on Cable	Stereo Audio
Control Method	Touch
Control Type	Basic
Controller Type	Android / iOS
Customer Reviews	4.5 out of 5 stars 50,193 Reviews
Data Link Protocol	Bluetooth
Enclosure Material	Plastic
Hardware Interface	3.5mm Audio
Human Interface Input	Buttons
Includes Remote	No
Installation Type	Plug In
Item Dimensions L x W x H	2.36"L x 1.54"W x 0.39"H
Item Weight	65 Grams
Lithium Battery Weight	0.07 Grams
Lithium-Battery Energy Content	0.93 Watt Hours
Manufacturer	COMSOON
Material	Plastic
Model Name	J22
Number of Batteries	1 Lithium Ion batteries required. (included)
Number of Channels	1
Number of Lithium-ion Cells	1
Number of Ports	1
Outer Material	Aluminum
Power Source	DC
Product Dimensions	2.36"L x 1.54"W x 0.39"H
Rechargeable Battery Included	Yes
Special Feature	3.5mm AUX Port, Navigation, Long Battery Life, Built-in Mic, Bluetooth to Aux, Car Audio Adapter, Hands-free Calling, CVC8.0 Noise Cancellation, Digital Signal Processor, Intelligent Noise Reduction, Bluetooth 5.0, Auxiliary Bluetooth Adapter Special Feature 3.5mm AUX Port, Navigation, Long Battery Life, Built-in Mic, Bluetooth to Aux, Car Audio Adapter, Hands-free Calling, CVC8.0 Noise Cancellation, Digital Signal Processor, Intelligent Noise Reduction, Bluetooth 5.0, Auxiliary Bluetooth Adapter See more
Supported Application	Navigation
Supported Media Type	GenericAudio
Supported Standards	Bluetooth 5.0
Unit Count	1.0 Count
Voltage	9 Volts (DC)
Warranty Description	1 year customer service
Wireless Compability	Bluetooth

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