1. Equipped with a 2.0-inch LCD high-definition display, the measurement data is clearly visible, with 5P high-current USB-A, 24P full-pin Type-C input and output interface, charging detection, one step faster. 2, 0.00001 low resolution, real-time monitoring of subtle changes in voltage, current and power during charging. 3. Support automatic protocol detection, co-signature deception, fast charging, PD2.0, 3.0, PPS, QC2.0, 3.0, QC4, FCP, SCP, AFC, PE, DASH VOOC, Supervooc. 4. Support 10 sets of charge and discharge energy data records; built-in battery capacity calculation formula, the battery capacity can be quickly calculated through the recorded data. 5. Driver-free installation, data synchronization, high efficiency and convenience, support for Bluetooth APP overvoltage and overcurrent alarm. Product name: USB voltage and current meter tester Model: FNB58 Type: digital voltage measuring instrument Version: with bluetooth (blue) Display size: 2.0 inches Monitoring voltage: 4~28V Monitoring current: 0~7A Monitoring power: 0~120W Load Equivalent Internal Resistance: 0~9999.9ohm D+/D- voltage: 0~3.3V Capacity: 0~9999.99Ah Power consumption: 0~9999.99Wh Cable internal resistance: 0~9999.9ohm Equipment running time: 99 days, 23:59:59 Recording time: 99 days, 23:59:59 Product size: 82X42X13mm Colour: Blue Material:Aluminum alloy Package Contents: 1 x USB fast charging tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.