1、High Accuracy: USB tester is mainly used to detect USB charging current, voltage, capacity, power, time, etc., real time display accurate data for you. 2、Safe Charging: USB Voltage meter can test the quality of chargers and cables to provide a safe charging environment for your valuable equipment. 3、LCD Display: USB tester features a digital LCD display for clear readings, ensur more accurate measurements and give you more reliable values. 4、Widely Use: USB meters is widely compatible with USB A port devices such as phones, tablets, laptops, car chargers, power banks, wall chargers, cables, etc. 5、Portable Size: Digital USB tester is small in size and light in weight, which can be put in your bag for easy to carry, provide safe charging at anywhere. Item Type: USB Tester Material: ABS Model: KWS MX16 Voltage: DC 4-30V Current: 0-5.5A Time: 0-99 hours Timer: 0-24 hours Power: 0-150W Energy: 0-999.9Wh Capacity: 0-99,999 mah Internal Resistance: 0-999.99 ohms 1 x USB Tester