package includes: 1 *Bluetooth decoder board
Channel: dual channel
PCB thickness: 1.6mm
Power supply voltage: DC 3.7-5V
Communication distance: 3-12 meters (different due to environmental obstacles)
Size: 3.3x3.5x1.1cm
Bluetooth name: BM3
Sound quality: lossless MP3 decoding
Power interface: MICRO USB port or 2.54 mil pin port
A:Black Bluetooth 5.0
B:Red Bluetooth 5.0
C:BT5.0 PRO
D:Bluetooth 5.0 With Case
E:BT5.0 PRO With Case