Multifunctional: This USB instrument can monitor voltage, current, capacity, power, load resistance, D+/D- voltage, charging time and other data. It supports QC2.0/QC3.0, BC1.2, Apple Iphone 2.4A and other various smart phones and chargers.
Wide Test Range: 0-5.0A. Wide voltage range: 3-30V. This USB digital multi-meter is specially designed to protect your cell phone charging, the real capacity of your power bank and real time charging data detecting.
Complete Protection: Keep you and your devices safe with real-time monitoring of charge data, USB monitor will automatically cut off when the device is full charged.
Unique Design: Exclusive design allows both USB sides to be used when connecting the USB tester with other devices.

Specifications:
Input/Output Voltage: DC 3-30V, Resolution: 0.01V
Current Test Range: 0- 5.0A, Precision 0.01A
Cumulative Capacity Range: 0- 99999 mAh, precision 0.001Ah
Cumulative Energy Range: 0- 999.999mWh, precision 0.001Wh
Power Calculation Range: 0- 999.999W, precision 0.001W
Time Cumulative Range: 0- 999hours 59min 59s, Accuracy: 1s
Internal Resistance : 0-999.99 ohmsTimer: 0-24 hours
Temp. Range: 0-84â„�Accuracy: ±1% Line Loss: 0.1Ω

Note:
Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you.