Features: Monitors multiple parameters with our USB Voltage Current Power Tester, featuring real time display of voltage, current, power, and charging capacity, ensuring you have complete insight into your charging status. Equipped with QC2.0 fast charging support, this tester is compatible for wide ranges of quick charging devices, enhancing your charging speed efficiently. Ideal for enthusiasts and everyday users, this device automatically identifies connecting equipment and adjusts output for optimals charging performances. Perfect for travel, daily commutes, or home use, its compactly and lightweight design allows easy portability, enabling you to monitors charging conditions. Builts with durability ABS material, it offers high resistance to wear and impact, ensuring long terms use while providing safety features like overcurrent, overvoltage, and short circuits protections. Specifications: Component:ABS Size:Approx.73x23x13.5mm/2.87x0.91x0.53inch Model:KWSV20 Voltages:DC4-20V Current:0-3A Package Includes: 1pc USB Power Meter note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.