Bluetooth Stereo Headphones, Bluetooth 4.1, Noise Reduction, Line-in Function & Hands-free Supported, OEM/ODM available.

Features:
Driver Unit: ø40mm x 2
Impedance: 32Ω
Sensitivity: 97±3dB S.P.L at 1KHz
Response (system): 20Hz~20KHz
Rated Power: 20mW
Aggregate capability: 40mW
Power Supply: Lithium battery/DC 5V
Built-in 400mAh rechargeable battery
Plug Type: Micro USB
Bluetooth Version: V4.0
Support: HSP, HFP, A2DP, AVRCP profiles
BT Transmission distance: 10-15m
Built-in microphone for calling function
Soft headband & ear pad to bring comfortable wearing
Unique & fashionable design
Clear & powerful sound
Support AUX IN function

Shenzhen Aoni Electronic Industry Co., Ltd