Features: Ensures safety and speed of your devices charging with our usb pd3.1 tester meter, featuring advanced quick charging technology for comprehensive voltage and current testing. This multimeter is crafted from aluminum, offering precise measurements, a large display for voltage, current, and power, and a user friendly interfaces with a temperature slider and charging visualization. For smartphone users, electronics enthusiasts, business professional, and frequent traveler who demand charging equipment. For use at homes, in the offices, this usb power meter ensures your devices are charging efficiently wherever you are. With its compatibility across various devices, this usb multimeter is essential tool for anyone look to maintain charging performances and battery health. Specifications: Component:Aluminium Size:Approx.4.3x2.5x1cm/1.69x0.98x0.39inch Package Includes: 1pcs USB Charging Tester note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. ②.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.