• Model: M25
• Bluetooth: V5.2
• Bluetooth Profile: A2DP,AVRCP,HFP, HSP
• Working voltage: 3.1V~4.2V
• Charging voltage: 5V-1A
• Speaker specification:8mm*2
• Frequency response: 20Hz~20kHz
• impedance: 32Ω
• Battery capacity of the headset: 60MAH
• Battery capacity of the storage box: 2000MAH
• Transmission distance: >10M
• Call time: About 10 h
• Playtime: About 8 h
• Waterproof: IPX7
• Charging time of headset: 1.5h
• Charging time of the Charging box: 2h.