Features 1、With this product ,you can get real-time monitor charging data ,such as current, voltage, capacity, power and time. 2、Plug and play, no addtional power supply needed. Small sized, easy and convenient to carry. 3、With digital LCD, data will be showed clearly. The working time and empty volume display has memory function after power failure 4、The USB tester can measuring charging data for your phone, computer, power bank, notebook, etc. 5、Made of high quality material, durable and practical to use. Specification Condition: 100% Brand New Item Type: USB Detector Material: Plastic Color: As shown in the picture Not Included USB Port Size: Approx.59x23x13.5mm/2.3x0.9x0.5in(L x W x H) Include USB Port Length: Approx.73mm/2.9in Input/Output Current: 0-3A, Current Resolution: 0.01A Precision: ±1% Line Loss: About 0.1Ω Weight: Approx.21g/0.74oz Description: IN- the input port is connected to the output port of the charger RTZ-Reset button, after press 3-5 seconds the screen reset OUT- The output port is connected to the USB port of the data cable Charging current display window (0-3) accuracy: +-1% Battery capacity display window (09999mAh) Working time display window (0-99h) units: minutes Package List 1 x USB Detector