Qualcomm Quick Charge 3.0 Technology: Possibly the latest, fastest and most efficient USB charging technology. Engineered to refuel devices up to four times faster than conventional charging. Smart IC:One port of car charger can output up to 3.0 A current depending on the charging capability of your device. SAFETY FIRST: Multiple built-in safeguards to protect your devices against excessive current, overheating, and overcharging. Comply to all QC 3.0 specifications. Output: 5V QC 3.0 Output: 3.6-6.5V/3A, 6.5-9V/2A and 9-12V/1.5A Compatible with Prior QC Versions: Innovative charger is backward compatible with all versions of Qualcomm Quick Charge Technology (1.0& 2.0, 3.0) and can provide standard charging for non-Quick Charge devices as well at their fastest permissible speeds. Sleek, Compact Design & Quality Engineered for Roads: State of the art materials are used to construct the charger so it can withstand hot and cold temperatures, low and high pressure, and is rugged enough to withstand drops and shock. 64 mm in height.