Multi Functional Design: Support Wireless Connection Via Bluetooth, & Wired Connection With Phones/computer; Support TF Card Playback, Insert The TF Card Into The Headphone To Play Music When There Is No Phone High Fidelity & Clear Bass Effect: This Headphone Supports Various Sound Effects Adjustment, Easily Realize The Sound Quality You Prefer Over-ear & Adjustable Headband Design: Adjust The Headband For Tight And Comfortable Wearing By Yourself, No Worries Of The Headset Falling Built-in Battery: With High Performance Rechargeable Polymer Battery, This Headphone Provides 8-10 Hours Of Music Time, Less Than 3 Hours Of Charging Time Universally Compatibility: Suitable For Most Bluetooth-enabled Devices, Such As For IPhone6s Plus 5S 5 4S And Android Smartphones Samsung Galaxy Phones And So On