Support Bluetooth-compatible connection and TF card (TF card not included) It will bring you excellent music/game/calling experience Ear-wrapped design, reduce sound leakage and enjoy the good sound quality The earmuffs are made of quality materials, soft and comfortable to wear 400mAh built-in rechargeable battery, provide super long standby time and using time Compatible with most mobile phones, tablets and other devices with Bluetooth-compatible function Specification: Product: Folding headset Type: Colorful light, wireless Model: B39 Bluetooth-compatible: 5.0 Transmission distance: 10 meters Channel: stereo Battery: 400mAh Package included 1 x Headphone 1 x Charging Cable 1 x Audio Cable 1 x English and Chinese User Manual Others Not Included Specifications Brand N/A Color Black Packaging Type Colored Box Gross Weight 0.299kg Volume Weight 0.395kg Package Length 17.500cm Package Width 12.300cm Package Height 8.200cm