The Y500 features the speed charge (5 min charging time = 1 Hour Playtime) In order to charge the headphones, use the micro USB charger that is included in the packaging. The charging port is located at the bottom of the RIGHT ear cup. Once the headphones are charging, you will see a solid red light next to the port. Once the headphones are fully charged, the red light indicator will turn off. Please Note: You cannot use the headphones via BT while they are charging. However, you can use the headphones via audio cable while charging.