1. Bluetooth Version:Bluetooth V3.0 EDR2. Packing List:1 x Bluetooth Headphone, 1 x USB Cable, 1 X 3.5mm Audio Cable, 1 x User Manual3. Featuresa. Bluetooth V3.0 EDR Technology, Transimission Distance Up To 10M.b. Powerful Functions All In One: Bluetooth High Speed Connected, TF Card Player, Anwsering Incoming Calls, Handsfree Talking, Superior Compability, High Fidelity Stereo Surround Soundc. Built-in High Sensitivity Microphone Allows You To Use The Mobile Phone,  Hands-free Chatting With Family, Friends, Acquaintances, Or Colleagues.d. Adopt The Top SRS Audio Noise Cancelling Processing Technology, Equiped With High Fidelity 40mm Professional Speaker, Through Professional Engineer Tuning, More Clear And Natural Sound Quality.e. Long Battery Life: Built-in Rechargable Lithium Battery,  Music Playing Time Up To 8 Hours; And Continue Talk Time Up To 6-7 Hours.f. Based On Ergonomic Design, Ajustable Rubber Head Beam, The Headband Is Made Of High Quality Soft Leather, More Comfortable And Suitable For Long Lasting Time Use.g. Support TF Card Music Play, 16GB Maximum Supported.