If you need a tester for professional purposes or have higher requirements for data accuracy, we strongly recommend you choose KM003C. ?Enhanced Compatibility?The USB-C input and output ports are compatible with nearly all your devices. You can also use a USB-C to USB-A adapter (not included) to test USB-A devices. ?Metal Shell?The tester features a durable and high-quality metal shell, ensuring it remains intact even if accidentally dropped. Dark gray perfectly fits all your electronic devices. ?Charging Test?Supports bidirectional current, allowing you to detect both the discharge status of power banks and the charging performance of chargers. ?Color Display?Equipped with a 1.14-inch color display, it provides clear information about voltage, current, power, current direction, energy, timer, D+, D-, CC, and more. ?Up to 240W Power?The tester supports up to 240W and USB 2.0. You can test high-power USB devices available on the market and be prepared for the future.