LED watch:

1. Power supply: two CR2025 button batteries 

2.28 LED lights display the time, red (12), yellow (12) Green (4), a red light as one hour, a yellow light as five minutes, a green light as one minute                                

3. Set:

(a). Press A button 3 seconds, the red light(hours) flashes, and then B button to increase hours

(b).press A button to switch to yellow light (minutes) flashes, press B button at this time to increase minutes