If you are looking for professional usb tester, you should take at this item. This usb tester is made of , which enjoys strong durability. It can greatly meet your practical requirement, can be used for charging measurement. Features -Color:Transparent -Material:ABS -Size:6.70X2.40X1.40cm/2.63X0.94X0.55in - Multifunctional colored screen tester, this device can test charging data instantly. - Suitable for phone charger, laptop charger, power bank, USB fan, and etc. - Provide 4 LCD main color screen display interface, button display interface. - LCD display screen, showing voltage, , capacity, energy, power, and other indicators . - Great craftsmanship, delicate shape, good texture, beautiful look, fashionable and unique. Specification Measuring voltage: 3.3-30V (Resolution: 0.01V) Measuring : 0-5.1A (Resolution: 0.01A) Capacity measurement range: 0-99999mAh (Resolution: 0.01mAh) Energy measurement range: 0-999999mWh (Resolution: 0.01mWh) range: 0-150W (Resolution: 0.01W) Load impedance measurement range: 1-999.9 (Resolution: 0.01) measurement range: 0 degree centigrade-80 degree centigrade / 32°F-176°F (Resolution: 0.01 degree centigrade ) Input interface: USB USB D+ voltage range: 0-2.99V USB D - Voltage range: 0-2.99V Refresh time: >500mS/times Measurement rate: about 0.5 times/ resolution: 160x80 Consumable: <0.02A Operating range: -10 degree centigrade~+60 degree centigrade Working air pressure: 80-106KPA Package list: 1 x tester