These brightly colored finger lasers from Toysmith are easy to use and turn on or off with a switch. Light switch locks in place so lights will stay active until the switch is turned off. Each set includes 4 plastic lights with black elastic bands, which fit most fingers. Each light projects a different color and measures 4 x 0.5 x 0.75 inches. Light colors include red, white, blue, and green. Contains nonreplaceable button cell batteries. • Age Grade: 5+ • Product Dimensions/Weight: 6.0 L x 0.8 W x 6.8 H / 0.1 lb • Inner Pack Dimensions/Weight: 11.9 L x 6.8 W x 3.0 H / 2.1 lb • Made In: China • Batteries required