Premium sound with portable charging case. 4 hours per charge. 12 hours total playtime. Inductive charging, built-in microphone. Auto pair & auto On. Open case and buds will auto sync to you d device. Deluxe charging case. Case charges buds 2 times for 12 total hours of playtime. Wire-free Bluetooth. Connect and control your Bluetooth capable devices. Play controls. Remotely operate your device from the earbuds. Built-in microphone.