Description:
This is a high quality USB intelligent monitor . It can measure voltage, current, power and capacity and automatically save data after power interruption
It can clearly display all the data and monitor charging data constantly.
The operating current and the output voltage charge-discharge capacity, performance of USB port and devices ( PC USB,cell phone charger, car charger , mobile power , etc. ) can be easily measured and judged.
Wide range of application; Easy to use and take; No additional power supply; Plug and play.
How to use: First, insert the digital devices into the USB Digital Voltage Measuring Instrument; Then insert the tester into chargers; Finally the charger is plugged into the socket.

Specifications:
Color:show as pictures.
Type:Digital Voltage Measuring Instrument
Model: KWS-V21
Voltage: 4-20V+/-1%
Current: 0-3A+/-1%
Time: 0-99H
Size: 59*23*13.5mm
Weight: 20g

Packing Includes:
1 * USB multifunction tester Welcome to burang!For make sure the stock is available ,you can refer to the product detail and tell me what size and what color you want ? Dear you also can following us.The Shipping time is about 2 weeks.You can leave the message first ,Our working time is Monday to Friday 9:00am-18:30pm.,we will reply you asap. Feel free to browse around!We do offer bulk pricing based on order quantity.Do message me for any inquiry on the product youre interested in. :)We will show you our best products and services. We will promptly update the product market, and promised 100% of new products.