To activate your LED Snowflake Earrings, press the button on the back of each earring. Snowflakes Pierced Earrings have one light function, a pulsing flash. Press the button again to deactivate. Dimensions: Height: 1.62 in. Width: 1.62 in. LED Colors: White Snowflakes Pierced Earrings come ready to use with non-replaceable batteries.