According to the manufacturer/donor:

• 57mm ultra-large dynamic drivers, turbine style housing, with the iconic Bluedio surging low-frequency shock, let you feel the bass resonate deep in the chest, enjoying the best sound quality.


• Ultra-long operation and carefree calling from Bluetooth 4.1: With robust high speed CPU of Bluetooth 4.1 operating system, comes with ultra-long using of 40 hours music, 45 hours talk and 1625 hours (approximately 67 days) standby time, the same battery, decrease up to 40% power consumption compare to Bluetooth 4.0.


• Acoustic echo cancellation and noise reduction effectively reduce ambient noise while talking, make far-end listener cannot hear what you said become history, just like talking face to face 


• Customized function: Audio Sharing allows you to connect to another H headphone via an audio cable, share music feast with your friends instantly (recommended to use headphones with impedance of 32? or higher)


• Simultaneously connect two Bluetooth devices, connects with your phone and tablet seamlessly


• Comfortable wearing: Custom fit supra-aural soft earmuffs, artificial protein leather of earmuffs simulated to human skin texture, ensure long lasting comfort in various rugged circumstances


• Just use a plug with audio cable (not included), then listen to your favorite tracks without using any battery, no matter how long your playlist.

 Specification: Model : H-Turbine Wearing type : Headband Function : Voice control, Answering phone, Song switching, Bluetooth, Multi connection function, Noise Cancelling, Microphone Connectivity : Wireless Connecting interface : USB Application : Mobile Phone Color: White & Gold, White & Rose Gold, Red, Black Plug interface: Full-sized Driver unit: 57mm Frequency response : 20~20KHz Impedance : 16ohms Sensitivity : 110 dB Power supply: USB port DC 5V Working time: Talk time: Working time: Talk time: 2-3 hours; Music playing time: 2-3 hours Standby time: Up to 3 hours Charging time: About 2 hours Bluetooth version: V4.1 Bluetooth distance: W/O obstacles 10m Bluetooth band: 2.4GHz-2.48GHz Bluetooth protocol: HSP, HFP, A2DP, AVRCP Package contents: 1 x Earphoneï¼Âˆnot including SD Cardï¼Â‰ 1 x USB charging cable