• Supply voltage: DC 3.7-5.5V

• Work current: 23mA-30mA
• Power supply interface: Micro USB or Male Pin
• Bluetooth name: BM3
• Bluetooth password: 1688
• Communication distance: 3-12 meters
• Bluetooth version: Bluetooth 4.1
• Support system: Android,iOS
• Channel: 2-Channel
• Audio quality: MP3 lossless decoding
• External power amplifier: no limit power