The AT35 features a 0.96-inch IPS high-definition color screen to display the device's charging status, voltage, current, capacity, energy, power, impedance equivalent, temperature, and other indicators at a glance. Enjoy a wide 160-degree viewing angle, high brightness, and long service life. Voltage: 3.7-30V; Current: 0-4A. The AT34 supports QC2.0, QC3.0, APPLE2.4A/2.1A/1A/0.5A, Android DCP, and fast charging protocol identification, so you can easily monitor your phone's charging status! Display: 0.96 inch color screen LCD Voltage Measurement: 3.70-30.00 V Voltage Measurement Resolution: 0.01 V Current Measurement: 0-4000 A Current Measurement Resolution: 0.001A Capacitance Measurement Range: 0-99999 mAh. Voltage Measurement Accuracy: ±(0.8% + 4 digits) at 25℃ Energy Measurement Range: 0-99999 mwh-999.99 Wh. Current Measurement Accuracy: ±(1% + 4 digits) at 25℃ Load Measurement Range: 1 ohm-9999.9 ohm Power Measurement Range: 0-120 W Temperature Measurement Range: 0℃~80℃/32°F~176°F Temperature Measurement Error: ±3℃/±6°F Operating Temperature Range: 0℃~45℃/32°F~113°F Refresh Rate: 2 Hz Product Size: 64mm x 22mm x 12mm. Product Weight: 14g