Simple Pairing - Simply open the charged case next to your iPhone, and your phone will pickup the X12 EarBuds. Hit pair and after a few seconds you\'ll be connected and ready to go. For Android phones, follow the normal steps of pairing a bluetooth device. The earbuds can be used together or separately on two devices. Bluetooth version 5.0, Wireless charging case. 3-5 hour playback time per charge, 72 hours standby time - 5V/1A quick charging ( 1.5 hours). 10m transmission distance, voice controlled functions.