Product Details:

• Brand: Hoco
• Model: EW72
• ANC: Active Noice Cancelation 
• Bluetooth V5.4
• Transmission range: 10m
• Transmission frequency: 2.4GHz
• Speaker: 13mm
• Battery capacity: 360mAh
• Left and right ear battery capacity 30mAh each.
• Impedance: 32Ω±15%
• Frequency response: 20~20000Hz
• Charging time: about 1 hour
• 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