It is super easy to use. You just need to take out the earphones from the charging case and put them on your ears. For incoming call, just press the button. Feel like listening to music, just press the button. | With Bluetooth 5.1 connection technology, our headset is compatible with all devices that support Bluetooth. The use of Graphene battery enables the headset to have prolonged use after a full charge and a long battery life. | After being fully charged, the headset can support playing time up to 8 hours. (Volume at 100%). Playing time may get extended when you play music at 70% of the volume.Magnetic charging case supports additional 3 full charges for the headset. | Latest digital de-noising technology makes phone calling clearer | Products comes with 2 eargels, 1 charging cable, 1 BTLT-300 earphone, 1 BTLT-300 charging case, 1 instruction, 1 holster and packaging.