bluetooth headphone

• Min. Order:3000

1.Drivers: 57mm speaker X 2
2.Transducer type: dynamic
3.Bluetooth version: V4.0
4.Frequency range: 2.4GHz-2.48GHz
5.Operating distance: up to 10m (free space)
6.Bluetooth profiles: A2DP, AVRCP, HSP, HFP
7.Impedance: 16Ω
8.Frequency response: 20Hz-20kHz
9.Sensitivity: >75dB
10.Distortion:<0.1%(THD)
11.Talk time: up to 10 hours
12.Standby time: up to 150 hours
13.Charging time: about 2 hours
14.Operational temperature: -40 to 80°C
15.Battery:lithium,450Mah