3 in 1 Battery Tester Voltage Current Detector Mobile Power Voltage Current Meter USB Charger Doctor-B091J7NCHS

Display data: Voltage Current Capacity Time Specification: 1. Input USB2. RTZ, Reset button, press it three seconds will Reset 3. Out USB4. Voltage: 3V-9V 1% accuracy)5. Current: 0-3A accuracy of 0.4%)6. Battery Capacity (0-99999mah)7. Working time (0-99 Hour)8. The working time and Capacity have Memory function when power off 9. Color: blue 10. Size: 7.3 x 2.3 x 1.35 cm. Package Including: 1 x USB Charger Doctor Voltage Current Meter Mobile Battery Tester Power Detector.