New product Original Bluedio H+ Bluetooth HeadphoneHeadset Super Bass Music Mp3 Player with Microphone FM Radio for Mobile Phone Brand: Bluedio Model : H+ Color : Black, White Wearing type : Headband Function : Song switching, Bluetooth, Multi connection function, Noise Cancelling, Microphone, Voice control, Answering phone Connectivity : Wireless Connecting interface : 3.5mm, Micro USB Application : Portable Media Player, Mobile Phone, Computer Plug interface: Full-sized, TF card slot Driver unit: 57mm Frequency response : 20~20KHz Impedance : 16ohms Sensitivity : 110 dB Power supply: USB port DC 5V Working time: Talk time: 45 hours; Music playing time: 40 hours Standby time: Up to 1625 hours Charging time: About 2 hours Bluetooth: Yes Bluetooth version: V4.1 Bluetooth distance: W/O obstacles 10m Bluetooth band: 2.4GHz-2.48GHz Bluetooth protocol: AVRCP, HFP, A2DP, HSPPackage contents:1 x Earphone,1 x Audio Cable,1 x USB Cable,1 x Bilingual User Manual in English and Chinese