WiseTiger&reg; Dual Port USB Car Charger, Auto Adapter 3.1A for iPhone ,iPod, iPad and other Apple or Android Devices with LED Light Designed and Emergency Safety Hammer Smart IQ Technology: Detects your device to deliver its fastest possible charge speed up to 2.1 amps. Input: 12V-24V DC, Output: 5V 3.1A . Intelligent Charging Control: WISETIGER car charger has intelligent charging circuit design for over-heat, over-current, over-charging protection short-currency protection etc. Dual universal USB port can be used for fastest charging of all Apple, Android and micro USB based devices. What you can count on: Comes with 24 month Hassle Free Warranty and full support from WISETIGER, so you can purchase with confidence. For technical support related query and other questions please write to us at any time.WISETIGER car charger is certified by most recognized testing agencies in the world and proudly meets all standards for CE&FCC RoHS requirements.