Supply voltage: DC 3.7-5V

Power supply interface: MICRO USB port or 2.54mil pin

Length, width and height: 3.3x3.5x1.1cm

Communication distance: 3-12 meters (depending on environmental obstacles)

Bluetooth version supported: Bluetooth 4.1 or below

Support mobile phone system: For Android, For Apple system

Channel: two channels

Audio quality: MP3 lossless decoding

Self-contained amplifier: no

External power amplifier: no limit to external power amplification

PCB thickness: 1.6mm

Needle spacing: 2.54mil