From birth to approx. 9 months (9kgs); soothes and calm baby with music and motion. gently push the seat for 5 side-to-side silent swaying motion speeds. Built-in carry handle for room-to-room portability Includes 2 speed vibration and 2 position recline Easy two-step folding mechanism with compact footprint for easy storage Includes 10 music options, 5 sounds and an mp3 adaptor