Digital USB Current Voltage Tester Phone Charger Capacitance, Power Detection Charge Meter Voltmeter Ammeter Detector MonitorFeature:This is a mini USB meter. It can measure voltage, current and capacitance. It shows all the data clearly. You can easily measure the USB port (USB to computer, mobile phone charger, car charger, mobile power source, etc.) port and equipment, working current and output voltage, charge and discharge capacity, performance, and judge the performance of the charging equipment cable, the tester can meet the requirements! Suitable for factory, laboratory and personal use, wide range, easy to use, easy to carry by yourself, no extra power, plug and play. Specification:Model: KWS - V20Material: PlasticColor: BlueVoltage: 4-20V+/-1%Current: 0-3A+/-1%Time: 0-99 - h Size: 59*23*13.5mm/2.3X0.9X0.5in Net Weight: 19g DIY Materials: Electric Display Type: Numbers OnlyCode Accuracy Level: Plus or Minus 1%Working Temperature: NormalPower Supply: ACnote:Due to the different monitor and light effect, the actual color of the item may be slightly different from the color showed on the pictures. Please allow 1-2cm measurement deviation due to manual measurement.1 x USB Meter