10 in 1 for white/black color. Description: 1. Real-time detection of the state of charge of the appliance, voltage, current, power and other indicators; 2. The tester is widely used in the quality inspection of 3C digital and peripheral products of USB interface.It is the first choice for electronics enthusiasts; 3. It adopts 0.96 inch IPS high-definition color liquid crystal display, which can be connected in two directions, 160 degree wide viewing angle, high brightness and long working life. 4. Support the identification of QC2.0, QC3.0, PD, SAMSUNG quick charge protocol; 5. Internal use of professional instrument sampling circuit, coupled with unique precision algorithm, ensures the accuracy and stability of the product at the hardware and software level; 6. With power-off storage function, when the mobile power is cut off, it can store capacity and energy data, which is convenient for subsequent viewing, and is convenient for measuring the energy capacity of the mobile power source; 7. Can help us clearly understand the load resistance and current discharge power, and better understand the range of use of the load. Specifications: Voltage: 4-30V Voltage resolution: 0.002A Current: 0-5A Current resolution: 0.002A Capacity: 0-999999mWh Load resistance: 1-9999.9 Power: 0-150W Energy: 0.999999mWh Timing: 0-99 hours Interface: USB24pin Test direction: two-way Display: 0.96 inch color screen Color: White, Black Weight: 15G (including packaging) Size: 55 x26.5 x11.5mm Package Includes: 1 x USB Tester Function Operation Description 1: Click to view the saved charging data of 1-9 groups. 2: Press the key for 3 seconds to clear the saved charging data of a single group. 3: Double click the key quickly to change the display page. 4: Press and hold the key for a long time, then plug in the power again, and enter the voltage calibration, such as the display (5.526V ). Double click the key again quickly, such as the display (5.528V1). Click the key to increase the display voltage. Double click the button again quickly, such as the display (5528V4). Click the button to lower the display voltage. Double click the key again, such as (5.526V -), and then click the key to display CURRENTCALIBRATION! The system automatically calibrates the current. After the calibration, it will automatically return to the main function page for normal use.