Hands Free Call and Sound:The bluetooth earpiece adopts the bluetooth 5.1 chip technology, which provides more clear sound and stable connection, allowing you to hear crystal clear calls like you are communicating face to face with others. Don't worry about interruptions on listing to music and calling.LED Charging Case and 80H Playtime:Built in 500mAh battery LED charging case, the bluetooth headset with microphone can be fully charged in 1.5H. The headset can be used continuously for approximately 80 hours with the charging case, but also provide 5-6 charging times for the wireless earpiece.In Ear Comfortable Wearing Design:In ear designed can fit in left/right ear more comfortable. Earhook rotation of 180 vertically and 360 horizontally, the flexible ear hook for a comfortable fit. It is lightweight and comfortable enough to be worn for hours.Simple operation: The buttons on the wireless headset are physical so there are few glitches. All operations such as song forward/rewind, music play/stop, answer/end/reject/, redial, mute function and SIRI are easily accessible via the buttons on the ear and can be operated smoothly even with one hand. The remaining battery level is displayed in the top right corner of the smartphone's home screen. You can keep track of the battery level at any time.Two Charging Methods & Connect Two Devices:You can charge your bluetooth phone headset with TYPE-C charging cable or charging case. It can also be connected with 2 devices simultaneously, so you can separate your life and work. It's a good ideal for office environments and driving.