New Sensory Set 4 for Modular Activity Board! This set includes: Gears: A crank that gets the gears spinning. Picture Change: Lenticular picture changes from sun to moon. Squeaker: Textured buttons that squeak. Mix and match your discovery! A modular sensory toy, PlayTab lets you build a unique experience packed with fine motor challenges, visual fascination, cause-and-effect discoveries, and more. They all magnetically snap onto the tablet (sold separately) any way you want. The classic activity board becomes more versatile and more open-ended with PlayTab.