Digital USB Current Voltage Tester Phone Charger Capacity Power Detect Meter Charging Voltmeter Ammeter Detector Monitor Feature: This is a mini USB meter. It can measure voltage, current and capacity. It shows all the data clearly. Can be easily measured USB (PC USB, mobile phone charger, car charging, mobile power supply, etc.) port and equipment working current and output voltage charge and discharge capacity, performance, and judge the performance of charging line charging equipment, the tester can meet the requirements! Suitable for factory, laboratory and personal use, wide range, easy to use, easy to carry alone, no additional power supply, plug and play. Specification: Model: KWS - V20 Material: Plastic Color: Blue Voltage: 4-20V + / - 1% Current: 0-3A + / - 1% Time: 0-99 - h Size: 59 * 23 * 13.5mm/2.3X0.9X0.5in Net weight: 19 g DIY supplies: Electric Display type: numbers only Code accuracy level: plus or minus 1% Operating temperature: Normal Power supply: AC Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x USB Meter