QC3.0/2.0 USB Charger Doctor Capacity Current Voltage Detector Meter Battery Tester USB 5V 9V 12V 20V QC 2.0 3.0 OLED Current Voltage Charger Capacity Tester USB Charger Doctor Power Meter Text Voltmeter Display data: Voltage Current Capacity Time 1: Input 2: RTZ， Reset button ， press it three seconds will Reset 3: Out 4: Voltage:3.5V-9V ( 1% accuracy ) 5: Current:0-3 .3 A ( accuracy of 0.4% ) 6: Battery Capacity(0-99999mah) 7: Working time (0-99Hour) Item specificsDisplay Type: Digital OnlyOperating Temperature: As PictureBrand Name: VakindAccuracy Class: As PicturePower Supply: DCMeasuring Range: As PictureDIY Supplies: ElectricalDimensions: As PictureModel Number: 99754