KCX_BT002 is a multi-purpose Bluetooth audio module that integrates Bluetooth audio and Bluetooth calls. Support matching various smart phone players on the market to play music, and support voice reporting of incoming calls, answering calls/hanging up calls/redialing recent calls and other functions. Simply implant this decoder board into your product, and you can upgrade ordinary wired audio products to wireless Bluetooth audio products. typical application: Home speaker to Bluetooth speaker Speaker repair and upgrade Car player modification and upgrade Retrofit and upgrade of computer speakers Features and advantages: 1. Excellent durability and coexistence 2. Ensure the stability of Bluetooth transmission through a variety of technologies 3. Intuitive LED indication 4. Voice prompt, voice report for incoming call 5. External buttons do not need voltage divider resistors, which is convenient and easy to use 6. Wireless transmission distance ≥ 10 meters Product size: 32 x 16.2mm color:Green Material:PCB Package Contents: 1 x Bluetooth audio receiver module 1 x connector cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.