The bestselling Baby Einstein 4in1 Kickin Tunes Music Language Discovery Activity Gym supports fine and gross motor skill development and cause and effect skills grows with baby from 0 to 36 months 4 modes include lay and play sitting up tummy time on the go Helps baby strengthen neck muscles during tummy time Piano includes 25 minutes of continuous lights and music plus teaches colors shapes and numbers in 4 languages English Spanish French and German 7 sensory toys engage and promote fine and gross motor skills like reaching pressing and kicking crinkle medallion triangle rattle textured music note flash cards selfdiscovery mirror piano toy and tummy time pillow features 2 toy bars and kick piano supports visual development Baby registry must have Piano rewards babys moves with 70 melodies sounds lights phrases and can be used for tummy time or lay and play flipped up for seated play or detached for on the go Dimensions 18 x 34 x 27 inches If your gym comes with try me batteries be sure to replace with 3 AA batteries to keep the fun going not included Mat is machine washable toys are easy to wipe clean Includes expertdeveloped Einstein Way Play Tips to inspire curiosity and foster purposeful parentbaby playtime