Submersible Floralyte III Blinks, Flickers, Steady On 10 per Box Select Color: Purple Submersible III LED lights have the option to blink, flicker, or remain steady on. Lights are about 1.25 inches in diameter by about 0.75 inches high. Each light uses two CR2032 batteries (included) and lasts approx. 48 hours. Perfect for lighting up vases and any water filled table centerpiece. Submersible Floralytes can be used for costumes, masks, place settings, or art lighting.