Color Black + Silver Brand N/A Model N/A Quantity 1 Piece Material ABS Shade Of Color Black Power Supply Input: 12~24V; Output: 5V 3.1A Other Features Insert it into the car cigarette lighter socket to read the battery voltage of the car; Compatible with 12V cars SUV 24V truck (do no use it on 24V vehicle for more than 50 min in case it melts); With USB ports to charge cellphone camera tablet PC and other digital devices; Range: 8v-30v.12v/24v; It shows battery voltage when the car is not started: 12.2-12.8V is normal; It shows engine voltage after the car is started: 13.4-14.8V is normal. Packing List 1 x Voltage tester