WirelessTrue Stereo Experience & IPX7 Protection With a wireless design, you are no longer disturbed by cables or tangled cables. A perfect choice for running, jogging, cycling, working out in the gym and you don't have to worry about Bluetooth headphones mixing with your hair. IPX7 protects your headphones from sweat, water, rain, etc. .Longer Playing Time and Portable Charging CaseThanks to the low power consumption, fully charged Bluetooth headphones can play non-stop music for 3-4 hours in standby mode and charge for 48 hours in standby mode. Compact and super light charger with built-in 0.66Wh battery, up to 5 times fully charged for bluethooth headphones (fully charged approx. 1-2 hours). .