Specification StyleOptionalA3(Without blue-tooth)/A3-B(blue-tooth) Model: A3 / A3-B Input Voltage: 04.50-24.00V Voltage Measurement Resolution: 0.01V Input Current: 0-3.000A Current Measurement Resolution: 0.001A Capacity Measurement Range: 0-99999mAh Voltage Measurement Accuracy: (0.2% + 1 word) Energy Measurement Range: 0-99999mWh Current Measurement Accuracy: (0.8% + 3 words) Load Impedance Measurement Range: 1.5-9999.9 Time Measurement Range: 0-99 Hours, 59 Minutes, 59 Seconds Temperature Measurement Range: - 10 ~ 100 / 0 f ~ 200 f Temperature Measurement Error: 3 / 6 f Screen Brightness Setting: 0-5, 6 Levels In Total Delay Screen Closing Time: 0-9 Minutes Voltage Curve Range: 4.5V-24.0V Current Curve Range: 0.00A-3.00A Product Size: 71.2mm*31.8mm*12.4mm Quick Charge Recognition Mode: QC2.0 QC3.0 Display Screen: 1.44 Inch Color LCD Refresh Speed: 2Hz Features 100% brand new and high quality Supports 360-degree arbitrary rotation of the screen to meet any angle reading. Test charger: Can measure various USB chargers.Test charging treasure capacity.it can not only directly test a variety of USB devices, plug and test, through blue-tooth can be connected to Android phones, computers, mobile phones, computer APP online control. Wire resistance measurement: After the data line is inserted, the screen of the tester turns black, indicating that the pressure difference is too large; the tester enters a 4.5V power-down state and needs to reduce the load current, and starts measuring from the first step; after the wire resistance measurement is completed, the test is performed. The meter will restart measurement after the next power up. Voltage, current curve - online mobile phone, computer: automatically change the range within 0.00A-3.00A measurement range, real-time display of fluctuations. In addition, you can press the "Next Page" button to switch to the voltage measurement waveform diagram, automatically change the range within the range of 4.5V-24V measurement, real-time display of voltage fluctuations. Applicable With Supports Type-C interface full transmission compatible with PD protocol and QC3.0/4.0 protocol: One table is compatible with multiple protocols for fast charging, supporting multiple protocols such as PD QC2.0 QC3.0/4.0 MTK. Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is 100% Package Included 1* Voltage & Current Meter Tester