1.1" LCD USB Mini Voltage and Current Detector USB Charger Tester Meter
LCD Display USB Charger w/Power Meter Voltage & Ampere DC 5V Max 5A 
Portable Mini 1.1" Screen USB Ampere Voltage Meter Charging Monitor / Charger Doctor


Features:
Color: Black
Material: ABS
Screen Size: 1.1inch
Powered By: USB
Working voltage: 3.7~7V, working current: 0~4A; 
Suitable for detecting all USB output power supply, charger, computer, car charger, power bank and so on; 
Can measure the no-load voltage, load voltage, device working current
So as to know whether the device performance meet the requirement or not.
Dimensions	 2.6 in x 1.02 in x 0.55 in (6.6 cm x 2.6 cm x 1.4 cm)
Weight	 0.6 oz (17 g)

Packing List
1 x Charger doctor