Feature: 1. 2.0 Inch LCD HD Display: This USB power multimeter adopts 2.0 inch LCD HD display, the measurement data is clearly visible, with 5P high current USB A, 24P full pin Type C input and output interface, charging detection. 2. Multifunctional: This USB digital multimeter is multifunctional, supports 10 groups of charge, discharge energy data recording, and has a built in battery capacity calculation formula, which allows you to quickly calculate the battery capacity through the recorded data. 3. Driver Free Installation: This USB voltage current power tester adopts driver free installation, which synchronizes the data, is efficient and convenient, and can display over voltage and over current alarms via Bluetooth APP. 4. Good Compatibility: This type C voltmeter ammeter supports automatic protocol detection, protocol decoy, play fast charging PD2.0, 3.0, for PPS, QC2.0, 3.0, QC4, for FCP, for SCP, for AFC, for PE, for DASH VOOC, for SuperVOOC. 5. Good Performance: This USB power meter has good performance with 0.00001 low resolution, which can monitor the subtle changes of voltage, current and power during charging in real time, and also has a simple display interface, independent function menu and humanized operation. Specification: Item Type: USB Tester Material: PCB Monitor Voltage: Range: 4-28V, Resolution: 0.00001V, Accuracy: ±(0.29‰+2) Monitor Current: Range: 0-7A, Resolution: 0.00001A, Accuracy: ±(0.5‰+2) Monitor Power: Range: 0-140W, Resolution: 0.00001W, Accuracy: ±(0.5‰+2) Load Equivalent Internal Resistance: Range: 0~9999.9Q, Resolution: 0.0001Ω, Accuracy: ±(0.5‰+2) D + / D - Voltage Range: 0- 3.3V, Resolution: 0.001V, Accuracy: ±(1.0% + 2) Device Temperature: Range: ℃, Resolution: 1℃, Accuracy: ±(1.2%+3), Range: ℉, Resolution: 1°F, Accuracy: ±(1.2%+4) Capacity: Range: 0-9999.99Ah, Resolution: 0.00001Ah Power Consumption: Range: 0-9999.99Wh, Resolution: 0.00001Wh Inside Cable: Range: 0-9999.9Q, Resolution: 0.0001Ω Device Running Time: Range: 99 Days 23 Hours 59 Minutes 59 Seconds, Resolution: 1 Second Recording Time: Range: 99 Days 23 Hours 59 Minutes 59 Seconds, Resolution: 1 Second. Package List: 1 x USB Tester