This USB voltage current multimeter is lightweight, small in size, durable and portable. It is designed to measure voltage USB power supply equipment, empty load, the voltage and current of USB terminal equipment at work. It is easy to carry and no extra cable or power supply is needed. Compact and Plug and play also detect USB charger output voltage and current are standard suitable for factories, laboratory and users. Features - Portable, light weight, small size and durable. - Easy to measure the USB charging current, voltage, discharge capacity - High temperature can be used for measuring USB powered or power consumption of the interface , mobile phone charger , U disk and other products. - With precision current calibration function for higher current accuracy - Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you! Specifications - Color: Black - Material: Plastic - Size: 5x3x2cm - Accuracy: ±1% - Connectors Supported: USB - Voltage: -9V (0.01V resolution) - Current: 0-5A (0.01A resolution) Package list: 1 x USB meter