【Upgraded Multifunctional USB C Power Meter】This multimeter tester can detect voltage, current, capacity, electrical quantity, power, temperature, resistance, charging time, and other data for USB or Type C port devices. A must-have gadget to check charging performance, such as charging speed and quality. 【Latest Upgraded IPS Color Screen】The newly updated version offers 8 main IPS color screen display interfaces. Simply click the button to switch between multiple interfaces. Supports 180-degree screen flip and 3 types of custom interfaces! 【Wide Range of Applications】The USB tester comes with an OTG adapter and supports PD3.0/PD2.0, QC3.0/QC2.0, BC1.2, and USB A or USB C. It's compatible with the updated iPhone 13 Pro mobile. (Supports fast charging for iPhone 13/12/11/X/iPhone Xs. Compatible with new MacBook Pro, MacBook, iMac, iMac Pro, Dell external battery. Insert the tester and double-click to clear data, then connect charging or mobile phone (continuous discharge required). Ensure discharge voltage is 5V or 9V). 【Professional Safety Protection】Features over-voltage protection, over-current protection, under-voltage protection, and low-energy protection. This upgraded USB Type C tester can detect safety and protect devices from damage to the greatest extent. It automatically shuts off the output while saving data during sudden power outages.