Yeeco 1.3" 128x104 LCD Display USB Tester DC 4-24V USB2.0 Voltage Current Meter Testing Gauge Voltmeter Ammeter Coulometer Multimeter Capacity Power Monitor Colorful TFT display, high accuracy and high resolution voltmeter ammeter, Micro USB port for testing wire, double USB female ports for quick charging; also display voltage and current curve, off-line recording The tester module equipped with 4 USB ports: USB2.0 is high current interface; double USB output; Micro USB interface; with function of quick charging that you can use it to speed up your electronics charging such as 5V 5A phone Dimension: 75mm(length)x 30mm(width)x 15(height); one button built beside the Micro USB port, easy to operate, short press can switch functions to check the parameter and you can get into the system setting if you press the button first and then power on 1.3 inch 128x104 LCD display can achieve the real-time current, voltage, capacity, energy, amp hour capacity, watt hour capacity, circuit loss and etc; very convenient to detect your appliances or devices This USB tester has wide applications: use it for testing powerbanks, power adapters, chargers, batteries, data cables or other USB meters' internal resistance