• This is a mini USB meter measuring voltage, current, power and capacity

• It conveniently measures USB port current and output voltage and judges the performance of charging devices

• Suitable for factory, laboratory and personal use, easy to use. No power supply required, just plug and play

Specifications:

• Model: KWS-V20

• material: plastic

• Voltage: 3-9V

• Current: 0-3A

• Accuracy: +/- 1%

• Time: 0-99 hours

• Size: 59*23*13.5mm