The Happy Birthday Party Glasses is provided with high quality LED and an absolute must for every birthday child or adult. The LEDs at the end of the bracket on and off
After switching on the worked into the blue bracket LEDs flash red and green. Dimensions: Width: 15 cm, height: 7.5 cm Following signal options 1 permanently lit 2 Quick flash 3 flash slowly Blinky the LED Party Glasses of course there are all complete with batteries