About this Item: 

• Bluetooth specifications: Bluetooth V5.4 Jerry AC7003.
• Support protocol: Headset Hands-free A2DP Avrcp.
• Transmission range: 10 meters.
• Transmission frequency: 2.4GHz.
• Maximum RF output power (EDR): 4DB Modulation type (EDR): GFSK, π/4-DQPSK.
• Speaker: 13MM; Impedance: 32Ω±15%.
• Frequency response: 20~20000Hz.
• Sensitivity: 98db±3db.
• Charging voltage: DC5V.
• Charging time: about 1 hour.
• Charging box battery capacity: 360mah.
• Left and right ear battery capacity 30mAh each.
• Talk time: about 4 hours.
• Music time: about 4 hours.
• Net weight: 57.6g (including charging compartment).
• Bare device weight: 3.7g (single ear).
• Size: 60.6*45.2*23mm.
• Color: White