Gardner Bender GUSB-3450 USB Multimeter, LED Display, Functions: Current, Voltage, Red

Gardner Bender's GUSB-3450 USB multimeter is used to confirm USB port voltage and current and check chargers, cables and USB ports. The tester features a high-impact housing and a pocket clip. Measure current draw, measure performance of solar USB chargers and test for proper wiring and polarity. The easy to understand display alternates between volts and amps. Features a 1 year warranty.