1.Multi-functional buttons: click the button to switch pages, long to switch temperature, flip the screen, data clear. 2.0.96-inch IPS HD color LCD display, real-time display of the charging status of electrical appliances, voltage, current, capacity, energy, power, equivalent impedance, temperature and other indicators at a glance! 3.Support QC2.0, QC3.0, APPLE2.4A/2.1A/1A/0.5A, Android DCP, fast charging protocol recognition, so you know the charging status of your phone at a glance! 4.Temperature mode can be freely switched between Celsius (℃) and Fahrenheit (℉) to meet different customer needs! 5. Adopting high-precision hot resistance sensor, it can not only measure the ambient temperature (when powering up for the first time), but also keep track of the tester's working temperature status. Parameter: Measuring voltage(V): DC4.000V~30.00V Measuring current(A): 0.1000A~5.000A Capacity range(mAh): 0~99999mAh Power range(mWh): 0~99999mWh Power range(W): 0~125W Impedance range (Ω): 0~9999.9Ω Temperature range(℃/℉): -30℃~89℃/-22℉~192℉ Timing range(T):99:59:59 Charging mode recognition (mode): QC2.0, QC3.0, 2.4A/2.1 A/ 1A /0. 5 A, Android DCP, (fast charging recognition mode is for reference only, cell phone update is fast, can not be accurately recognized) Refresh frequency: 1.25Hz Screen display type: 0.96 inch IPS color LCD screen Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:Photo Color Material:plastic Package Contents: 1 x USB 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.