Features 1、Accurate Testing: Ensure device charging safety and efficiency by accurately measuring USB charging current and voltage. The USB voltage meter provides accurate readings for optimal charging performance. 2、Multi Functional Design: Easily monitor charging status with simultaneous display of current and voltage on this versatile USB detector. Stay informed about your device's power levels with this comprehensive tool. 3、User Friendly: Simply plug in to automatically view data. Effortlessly check the status of your device's battery with the convenient and straightforward operation of this USB meter. 4、Portability: The compact design of the USB voltage and current meter makes it portable for on the go use and convenient storage when not in use. 5、Wide Compatibility: USB voltage meter is universally compatible with a wide range of USB charging devices, ensuring comprehensive monitoring capabilities for all your power needs. Specification Item Type: USB Tester Material: PC Current: 0-5A Time: 0 to 99 hours Temperature: -5℃ to 80℃ Package List 1 x USB Tester