PLUS key, for years, months, days, hours, minutes, seconds add operation
According to the numerical sum 1 at a time
MODE key, can be in display clock, switch to the year, month, day, hours, minutes, alarm clock, the adjustment of outer ring LED display state
To use add key to the year, month, day, hours, minutes, seconds, and display mode to adjust
RST key, press the reset button, then the MCU reset

Technical Details

Size (LWH): 6.8 inches, 4.7 inches, 1.5 inches
Product Details
Product Dimensions: 6.8 x 4.7 x 1.5 inches
Shipping Weight: 0.2 pounds (View shipping rates and policies)
ASIN : B00XU48OLU