Multifunctional Buttons: Click the button to switch pages, long press to switch temperature, flip the screen, clear data. 0.96-inch IPS HD Color Screen: Real-time display of power device charging status, voltage, current, capacity, energy, power, equivalent impedance, temperature, and other indicators at a glance! Supports Fast Charging Protocols: Supports QC2.0, QC3.0, APPLE 2.4A/2.1A/1A/0.5A, Android DCP fast charging protocol recognition, so you know your phone's charging status instantly! Celsius/Fahrenheit Selectable: Temperature mode can be freely switched between Celsius and Fahrenheit to meet different customer needs! High-Precision Temperature Sensing: With a high-precision thermistor, it can not only measure the ambient temperature (when powered on for the first time), but also monitor the tester's operating temperature status. Specifications: Voltage Measurement (V): DC 4.000V~30.00V Current Measurement (A): 0.1000A~5.000A Capacity Range (mAh): 0~99999mAh Power Range (mWh): 0~99999mWh Power Range (W): 0~125W Impedance Range (Ω): 0~9999.9 Temperature Range (°C/°F): -30~89/-22~192 Time Range (H:M:S): 99:59:59 Charging Mode Recognition: QC2.0, QC3.0, 2.4A/2.1A/1A/0.5A, Android DCP (Fast charging recognition is for reference only; mobile phone updates are rapid and may not be accurately identified) Refresh Rate: 1.25Hz Display Type: 0.96-inch IPS color screen Note: The product may be constantly updated; due to different batches, the actual product may have slight differences or color variations, which do not affect the use. Color: As shown in the picture Material: Plastic Package Contents: 1 x USB Tester Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowable measurement error is +/- 1-3cm.