True Wireless bluetooth 5.0 Earbuds: no any cord disturb your mood,listening music or phone calls freely,You will have a super experience to enjoy your life MONO/Stereo Sound :both the right and left bluetooth headphones can use alone, you can only use the right or left one to pair with your phone Calling with Two earbuds:two earbuds can have sound when calls come in Supper Easy Pairing: it is already a paring mode when you take the bluetooth earbuds out of charging box, turn on your device’s bluetooth function and search “D900p” ,then pair with it Long Battery life :45mAh battery for about 3.5 hours play music time, 400mAh charging Box capacity support about 3 times charging ,it is good for workout or play outside a whole day (#80)