Supply voltage:6-36V Bluetooth-compatible work light 1 Bluetooth-compatible work light 2 AUX audio interface,LINE_INR,right channel input,GND ground to ground,LINE_INL left channel input Audio output interface,R_OUT right channel output,GND ground to ground,L_OUT left channel input Audio switching relay,NEC imported,to ensure the quality of sound transmission and service life Bluetooth-compatible antenna with received signal.If the module is connected to the metal case,it needs an external antenna (router, 2.4G antenna);if it is plastic or wooden,the shell does not use it. CRS64215 Bluetooth-compatible program to support APT-X lossless signal reception CSR64215 Bluetooth-compatible receive module support protocol:APT-X,A2DPv1.3,AVRCPv1.6,HFPv1.6,HSPv1.2,DIV1.3 Suitable for refitting machine, power amplifier board,DIY,power amplifier,front stage effect device and other audio equipment Tips: If the end of conversion, the Bluetooth-compatible work with a slight noise at the end of noise or interference with the sound, plus a small power 6-36V more than 500mA, to the Bluetooth-compatible module independent, can solve the problem of noise, power is prone to interference noise sharing device Size:6.7x3.3cm/2.64x1.30inch Current: 500MA Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item.Thank you Package Includes: 1x CSR64215 Amplifier 3x lines