Emoji Light Up Whistle Necklaces - 12 pk - Play Kreative TM 12 Emoji light up whistle necklaces. Fun and Funny Gag Office Gift! Each whistle Lights-up and Measures Approximately 3" in Length ~ Press a Button to Ignite a Flickering Show of multi-Color Light Awesome Birthday Party Favor ~ Giveaway ~ Fair Prize ~ Teacher Gifts ~ BFF Sleepovers The emoji whistle are conveniently housed on a necklace to keep nearby for any situation (or expression). Kids & Adults Love Them! Batteries included ~ 6+