Vehicle Lighter Adaptor for Micro-USB devices. It has a built in IC-CHIP to prevent your phone from over-charging. Short circuit protection. Plug never heats or overcharges the battery It is built to have superior quality over other car chargers. Input: 12v-24v DC. Output: 4-12v DC max 450mA. Receive 30 days money back or exchange warranty guarantee and lighting fast shipping within 24 hours (1 business day or less) if purchase with Sogawireless. This includes receiving the accurate item as described in the listing.