UPGRADED MULTIFUNCTIONAL USB C POWER METER: Detects the charging status and process of your USB-enabled or type c-enabled devices. Supports QC3.0, QC2.0 and BC1.2. A Must Gadget checks the charging performance (charging speed and quality) of the output wall/car/solar panel chargers and USB charging cables. It can be also used to find the highest current of the Wireless Charger, and test capacity and electric energy of power bank. PROFESSIONAL SAFETY GUARD: Featured with over-voltage protection, over-current protection, under-voltage protection, low energy protection and alarm system. This upgraded USB Type C tester can detect safety and maximally protect the appliances from damaging. It will cut off output automatically and alarm by sound, while it will save data when power off suddenly. MULTIPLE COLOR SCREEN DISPLAY MODES: New upgraded version offers 8 LCD main color screen display interfaces, allowing switching the display interface by pressing the key. With the new interface settings, this instrument can monitor voltage, current, capacity, electric quantity, power, load impedance, D+/D- voltage and other data of USB. WIDE RANGE OF APPLICATION: Thanks to the PD protocol quick charging mode measurement technology, this new multimeter supports the updated iPhone X mobile phone. (Support iphone 8 / 8P / iPhone Xs quick charging, 29W power, 5V3A / 9V3A / 12V2.5A / 15V2A). It also can be applied to test other type C devices, such as Samsung Galaxy S9 Plus, Google ChromeBookPixel, OnePlus, HuaWei P9, ect. EVERSAME PROMISE: We have always believed that a stable and continuously improve product quality. We trust our products and we offer 18-month Breakage Warranty. For any reason you are unsatisfied with our product, just feel free to contact support for exchange or refund. WHAT WE PROVIDE: 1X USB Tester. (Note: If the USB Tester doesn't display any parameters, please insert the small adapter being sent with the package into the side hole on the USB Tester, to trigger the PD Charging Function. )