Aimike Aluminum USB Car Charger With Stainless Steel Hammer Dual Port for Iphone Android Devices Hammer: When You Encounter an Emergency Situation In The Car, this USB Car Charger can Save Your Life With Smart Technology, Each Port Intelligently Identifies Your Device and Seeks to Maximize its Charging Speed Dual USB Car Charger, the Dual Smart USB Ports Quickly and Easily Identify Your Mobile Devices, to Provide Superior Charging Efficiency Compatible with: Universal, iPhone, iPad, iPod, Samsung, HTC, MP3 Players, Digital Cameras,PDAs and all other digital devices with 5V input Safe Usage:This Car Charger is Reliable and Safe, with Protections Against Overheating, Overcurrent, and Overcharging. Charging will Stop Automatically when Battery is Full