1. Product dual color OLED display,can show the six different display mode in 4 directions.
 

2. One button to operate.

 

3. Low-power consumption, work with the 2 pieces AAA alkaline battery.
 

4. Battery power indicator.
 

5. The device will automatically power off in 8 seconds if there is no finger signal.
 

6. Alarm Setting.

 

7.1-4 levels of brightness can be adjusted.

8.Small in volume, light in weight, and convenient to carry.