Features:

It can measure the USB-powered devices empty and easy to use and practical
Compact and easy to carry， no additional power supply， plug and play
It can easily measure the output voltage of the USB port and the device operating current or load voltage. Detect any USB charger such as PC USB， home charger， car charger. Wide range of applications， any phone， any electronic product
Suitable for factories， laboratories and personal use
Voltage: 3V-9V ± 1%
Current: 0-3A ± 1%
Time: 0-99H
Battery Capacity: 0-99999mAh
Size: Approx. 7.2cm x 2.2cm x 1.1cm/ 2.83" x 0.87" x 0.43"

Package Included:

1 x USB Current Voltage Detector Battery Tester Meter