Mini 0.6" OLED USB Data Transmit Charger Voltage Current Power Tester - Blue + Silver
Operating temperature: 0~60'C; Eerror: 1%; Measuring capacity range :0~50000mAh (memory capacity comes); Power consumption: <12mA; Display Material: OLED screen (Display color: white); Can easily measure the USB port of the output voltage current power and charge capacity.