1、FAST CHARGING AND OVER VOLTAGE PROTECTION: Fast charge; charge for 30 minutes and listen for 24 hours. The overcharge protection battery will automatically power off when it is full. 2、CONVENIENT TOUCH AND SWITCH: Bluetooth wireless headset supports tap to call, voice control. Put in automatic shutdown, take out automatic connection. 3、STABLE CONNECTION: Using Bluetooth 5.0, stable connection, automatic identification of various mobile phone computer models, compatible with no delay. 4、AUTOMATICALLY CONNECT BACK: Automatically reconnect after opening the cover and power on, after the first time the headset is successfully paired. Automatically connect back when power on. 5、PANORAMIC SOUND EFFECTS: Panoramic sound effects, high immersion and more enjoyment, enhance the depth of sound, sense of super resolution of space. 6、HIFI LEVEL SOUND QUALITY: HiFi level sound quality, presenting a surround 3D effect, will take you to the music scene, feel the shock of the scene, and bring you an excellent music experience. Item Type: Bluetooth Earphone Material: ABS Bluetooth Version: V5.0+EDR Voltage: 5V Charging Time: About 1 Hour Transmission Range: Approx. 10-15m / 32.8-49.2ft Standby Time: 240 Hours Play or Talk Time: 2-2.5 Hours Built In Lithium Battery Capacity In The Charging Compartment: 200mAh (Inclusive) 1 x Charging Compartment 2 x Headphone 1 x Charging Cable