VTech Nest and Build Tree Stacker Use the Nest and Build Tree Stacker and stacking or nesting the ten brightly colored triangle pieces or snap them together to create five small blocks Chunky pieces are easy for little ones to grab and sort to build motor skills; learning toy features 145+ sounds, songs, melodies and phrases Place the interactive cat on top of the pieces to learn colors, numbers and objects; cute cat encourages interaction by asking a variety of questions Pressing the triangle button on the cat plays four sing-along songs, fifteen melodies and tons of playful sounds and phrases Requires 1 AAA battery (battery included for demo purposes only; new battery recommended for regular use); intended for ages 6 months to 3 years