This USB meter can test voltage, current, power and capacity at the same time and display on the white OLED screen. It features over/under-voltage alarm function and screen rotation function.

​Features:
White OLED display, clear for readings.
Test voltage, current, capacity, powerat the same time(USB3.0 can also test energy).
Three modes for selection: direct mode, quick charge mode and disconnected mode.
9 sets of data can be maintained(only USB 3.0 model).
USB 3.0 only: capacity stored function, capacity unit switch, and shut-down screen function.
With over/under-voltage alarm function and screen rotation function.
Support QC2.0 high pass quick charging.
Suitable for digital products, such as mobile phones, power bank, tablet, camera, etc.

Specifications:
Display: 0.91" 128*32 White OLED
USB Interface: USB 2.0 / USB 3.0 (Optional)
Voltage Range: DC 3.7-13V
Accuracy: USB 2.0: (+/-)0.3%+1dgt; USB 3.0: (+/-)0.2%+1dgt
Current Range: DC 0-3A
Accuracy: USB 2.0: (+/-)0.5%+2dgt; USB 3.0: (+/-)0.8%+3dgt
Power Range: 0-39W
Capacity Range: 0-99999mAh, Resolution: 1mAh
Energy Range(USB 3.0 ONLY): 0-99999mWh-999Wh, Resolution: 1mWh
Update Rate: 2 times/s
Static Power Consumption: About 10mA
Item Size: 64 * 22 * 11mm / 2.52 * 0.86 * 0.43in
Item Weight: 14g / 0.5oz
Box Size: SUB 2.0: 9.5 * 4.5 * 2cm; USB 3.0: 9 * 6 * 2.2cm
Package Weight: USB 2.0: 27g / 0.98oz; USB 3.0: 44g / 1.57oz

Package List:
1 * OLED USB Power Meter
1 * Srotage Box
1 * User Manual (English)