Bullet Points:
[ Easy for Users ] Able to play music when the blue indicator light flashes, the Blue tooth Amplifier Board is simple to pairing Blue tooth, easy to operate, and convenient to use.
[ Made of Quality Materials ] Made of high-quality materials, Blue tooth Amplifier Board is great to make high-quality sound, used for Blue tooth 5.0 main control chip, JL6925A, true stereo 5.0 chip.
[ Long Service Life ] Universal USB 5V power supply, Blue tooth Amplifier Board is safe and environmentally friendly with power supply design, durable, and can be used for a long time.
[ Up-to-date Technique ] Adopts the new technology, Blue tooth Amplifier Board is designed with a 3.7-5V power pad, great to realize the modification of the external 3.7-5V lithium battery power supply.

[ More Functions ] Great to output stereo sound source, Blue tooth Amplifier Board is designed with a 3.5mm stereo audio interface, able to insert earphones and connect power amplifiers, and other equipment.

Description:
This product adopts Blue tooth 4.1 main control chip, JL6925A, true stereo 4.1 chip. good sound quality
Support automatic connection function, support WAV+APE+FLAC+MP3 lossless decoding, and stereo output.

Specification:
Product weight: 6 grams
Power supply: 3.7-5V
Signal-to-noise ratio: 90dB
Total Harmonic Distortion + Noise: -70dB
Crosstalk: -86dB
Noise reduction: 91dB
Supported profiles: A2DP/AVCTP/AVDTP/AVRCP/HFP
Line of sight: >15m
Size: 30mm*30mm
Packing: electrostatic bag

Interface details:
1. USB power supply: Universal USB 5V power supply
2. 3.7-5V power supply pad: realize external 3.7-5V lithium battery power supply modification
3. LED indicator light: blue light is on in Blue tooth mode
4. 3.5mm stereo audio interface: standard 3.5mm interface, output stereo sound source, can insert headphones, connect power amplifier and other equipment

Pairing instructions: Connect the power supply, the blue indicator light flashes, and enter the Blue tooth mode; when you hear the voice prompt "Blue tooth device is ready to pair", it means that you have entered the Blue tooth mode and are waiting for pairing; after the mobile phone Blue tooth searches for "JH-BT", Click Connect. When you hear the voice prompt "Blue tooth device connected successfully",
Indicates that the board is successfully connected to the mobile phone, the blue indicator light is on, music can be played, and the blue indicator light is flashing

Packing List:
3*Audio Receiving Board (accessories not included in other pictures)


Note:
Due to different lighting and screen settings, the color of this product may be slightly different from the picture.
Due to the different manual measurement methods, please allow a small size difference of 1-3mm.