1Blind Plug Design: A voltage and current tester with positive and negative double sided blind plug design, which can input USB metal shrapnel. 2Any Plug: The tester supports any plugging and unplugging in the front and back directions to avoid misplugging or plugging in the wrong direction, and can ensure that the front of the display screen is displayed regardless of the front and back of your female base. 3Professional Circuit Board: The tester of professional circuit board, coupled with unique accuracy algorithm, ensures the accuracy and stability of the tester at the hardware and software level. 4High Compatibility: This is a test charger with a very stable current. It has high compatibility and can be used in more fields. 5Easy to Use: The tester is convenient and quick to use, which can be plugged into any device, such as chargers, computers, power banks and other digital SB interface devices. Item Type: USBPowerMeterTester Material: ABS Shell + Circuit Board Voltage: 3.6-32.5V Voltage Measurement Range: 4V-30V Resolution Accuracy: 0.01V Current Measurement Range: 0-5A Resolution Accuracy: 0.01A Capacity Accumulation Range: 99999mAH Resolution Accuracy: 0.001Ah Power Accumulation Range: 999999mWh Resolution Accuracy: 0.001Wh Power Calculation Range: 299.999W Resolution Accuracy: 0.001W Timing Time: 999 Hours 59 Minutes 59 Seconds Resolution Accuracy: 1 Second Test Content: USB Voltage, Current, Power, Capacity Power, Timing and Other Data 1 x Tester 1 x Resistive Load Please use within the parameter voltage and voltage range