Wireless Headest Bluetooth-Compatible Hifi Sound with Mic Long Battery Life Three Connection Methods Specification: Color: black, white, pink, yellow, blue, green BT version: 5.0 Support configuration files: HSP, HFP, A2DP, AVRCP Transmission distance: up to 10m (without obstacles) Frequency response: 20-20KHz Resistance: 32ohm Sensitivity: 95±3dB Microphone: built-in Plug type: 3.5mm audio port Battery capacity: 200mAh Music playback time: about 6 hours Standby time: about 24 hours Charging time: about 2 hours Charging voltage: DC 5V Size: about 17.8 * 17.8 * 7.2 cm / 7.00 * 7.00 * 2.83in Weight: 131 g Features: -With BT connection, TF card music playback, AUX-IN wired music playback, microphone hands-free call and other functions. -BT5.0, easily pair almost all audio devices that support BT, enjoy wireless music and hands-free calls. -Connect audio devices without BT function (such as MP3/MP4, laptop, etc.) through the attached 3.5mm cable. -Built-in 200mAh rechargeable battery, each charging cycle can last up to 6 hours of music playing time and 24 hours of standby time. -The length of the headband is adjustable, the soft ear cushions are comfortable to wear and easy to store. Packing List: 1 * Bluetooth headset 1 * 3.5mm audio cable 1 * USB cable 1 * Manual Note: 1.Please allow slight size deviations due to manual measurement,measuring methods and tools. 2.The picture may not reflect the actual color of the item because of different photographing light and display monitor.Thanks for your understanding. With BT connection, TF card music playback, AUX-IN wired music playback, microphone hands-free call and other functions. BT5.0, easily pair almost all audio devices that support BT, enjoy wireless music and hands-free calls. Connect audio devices without BT function (such as MP3/MP4, laptop, etc.) through the attached 3.5mm cable. Built-in 200mAh rechargeable battery, each charging cycle can last up to 6 hours of music playing time and 24 hours of standby time. The length of the headband is adjustable, the soft ear cushions are comfortable to wear and easy to store.