The 3 in 1 car charger has a 2.1 amp USB port and a 1 A amp USB port,to charging multiple devices at the same time. Built in Bluetooth 4.0 hands-free headset compatible with IOS & Android phones, be safe while drive. While the car starts, it will release a large number of negative ions, the air of smoke and dust precipitation, can eliminate formaldehyde, carbon monoxide and other bacteria and purify the air. Customized logo is available.