1.44-inch LCD Display --- This multimeter features a 1.44-inch high-definition color LCD display, which can display the charging status of electrical appliances in real time. Voltage, current, capacity, energy, power, equivalent impedance, temperature, and other indicators are clearly visible. Note: The screen is rotatable. Fast Charging --- Supports most mobile phone chargers. Note: This fast charging protocol identification method is for reference only; due to the rapid updates of mobile phones, it may not be accurately recognized. Load Testing --- This multimeter can be used with our load tester to test the output voltage, current, power, and other parameters of mobile phone chargers, power banks, USB data cables, etc. Caution --- 1. To prevent scratches during transportation, the multimeter surface is covered with a protective film. Scratches on the protective film are normal and can be removed. 2. Please connect to the USB interface. Correct connection method: Connect from the USB male connector to the USB female connector, or from the Type-C input port to the Type-C output port. Do not connect from the USB male connector to the Type-C output port. 3. This version supports Bluetooth connectivity. Color: As Shown Material: ABS+Metal Package Contents: 1 * USB power meter