1.Multi-functional buttons: click the button to switch pages, long press 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, SAMSUNG 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 surface 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, APPLE 2.4A/2.1 A/ 1A /0. 5 A, Android DCP, SAMSUNG (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.