ITEM SPECIFICATIONS: ⚡Bluetooth version: V5.0 EDR ⚡Battery capacity: 50mAh/3.7V ⚡Charging box 450mAh ⚡Headphone Call duration: 4-5 hours ⚡Music playing time: 4-5 hours ⚡Headphone standby time: 120 hours ⚡Music playing time: 4-6 hours ⚡Charging time: 1.5 hour ⚡Transmission distance: 10 meters PACKAGE INCLUDES ⚡1 Pair of Bluetooth headset ⚡1x Charging Box ⚡1x USB Cable ⚡1x User Manual ITEM FUNCTIONS: ⚡Activate the wireless headset without pressing any button. The Bluetooth ear hooks can be turned on automatically and paired after being removed from the charging case. At the same time, they can also turn off automatically and charge after putting back the charging box. ⚡Play / Pause ​>>>> Single Click ⚡Answer / Hang-up ​>>>> Single Click ⚡Volume Control ​>>>> Press Three Times ⚡Switch Songs ​>>>> Double Click ⚡On / Off ​>>>> Long Press for 5 seconds