Specification:
1. bluetooth V4.2
2. Transmission scope 10 meters
3. Charging voltage: DC5V Charging time: about 2 hours
4. Product size: L60×W16×H26mm
5. Net weight: 10G
6. Call + music time 10 hours (80% volume) Standby time 120 hours
7. Multi-function button, add two auxiliary buttons, volume adjustment / song switching
