If it seems like this great promotional gift is just calling out to you to "Take Me On," then listen! Because with customizable A-Ha! Lightbulb Keychains from Quality Logo Products, you're really on to something. This truly brilliant promotional key chain will carry your logo or slogan in style, giving you a cool way to promote your brand's great ideas. The keychain lights up in three different colors (blue, red, green) which gradually change and then blink, using long-lasting L.E.D.s. Give your A-Ha! Lightbulb Keychains away at your next trade show or promotional event. A fun imprinted gift for any industry! Includes three button cell batteries. Available Color(s): Clear. Imprint Area Size: 1/2" x 1/2" Dimensions: 3 3/4" x 1 1/4" x 1 1/4" Material: ABS Plastic