Wholesale Headphone Noise Canceling 5.0 Built In Battery

Wholesale Headphone Noise Canceling 5.0 Built In Battery

Bluetooth version: Bluetooth V5.0+EDR
Transmission distance: 10 meters

Use time: 4 hours
Standby time: 300 hours
Battery: 250 mAh rechargeable lithium battery
Charging time: 2 hours

Headphone parameters:
Speaker: Ø40mm
Sensitivity: 110±3dB S.P.L at 1KHZ
Impedance: 32Ω
Active noise reduction: 18 ~ 23 decibels
Frequency response: 20Hz-20 KHz
Rated power: 15mW×2
Music playing time: 4h