Product features: Real-time monitoring of charging status Protect charging equipment, for the detection of charging equipment such as chargers and mobile power supplies, display voltage, current, power and other data on one screen to meet diverse testing needs. High-definition screen is obvious adopts 0.96-inch IPS high-definition color LCD screen, 160-degree wide viewing angle, high brightness, long working life. One-screen display of various data Real-time monitoring of voltage/current/power/internal resistance/temperature, etc. of USB electrical equipment when working, one-screen display, real-time grasp, more secure and reliable. 4-digit resolution measurement is more accurate Product measurement resolution is increased to 4 digits, higher precision and more accurate measurement. Widely compatible with fast charge recognition - key off-screen display flip. Product parameters: Model: AT34 Display screen: 0.96 inch IPS color LCD screen Measuring voltage: 3.700-30.000V Voltage measurement resolution: 0.01V Measuring current: 0-4.0000A Current measurement resolution: 0.001A Capacity measurement range: 0-99999mAh Voltage measurement accuracy: (0.1%+2 digits) Energy measurement range: 0-99999mWh-999.99Wh Current measurement accuracy: (0.2%+4 digits) Load impedance measurement range: 1-9999.9 Power measurement range: 0-120W Temperature measurement range: 0~65/32~149 Temperature measurement error: 3/ 6 Operating temperature range: 0-45/32~113 Data refresh rate: about 0.5Hz Product size: 64 x 22 x 11.2mm D+/D- Voltage measurement range: 0-3.3V D+/D- voltage measurement accuracy: (10%+10 digits) Fast charge recognition mode: QC2.0, QC3.0, for 2.4A/2.1A/ 1A/0.5A, for Android DCP, for Material: PC colour: blue Package Contents: 1 x 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.