SmartSwing Technology offers six different baby swing speeds from low to high--whether baby is rocking side-to-side, or swinging head-to-toe. Its easy to switch from one swing motion to another; just push a button and turn the seat! My Little Snugabear Ballerina Cradle n Swing actually senses babys weight, so speeds wont slow as baby grows, and it starts without a push. Brand: Fisher‑Price Type: Swing Swing motion: Rocker, Cradle Feature: Plug‑in, Musical, Portable Battery Supported Battery Form Factor · Required Qty Supported Battery Form FactorD size Required Qty4 General Product Type · Age · Baby Weight (max) · Power Source · Features Product TypeElectric swing AgeBirth‑9 months Baby Weight (max)24.9 lbs Power SourceAC adapter, battery FeaturesMachine washable Miscellaneous Safety Warnings · Compliant Standards Safety WarningsAdult assembly required Compliant StandardsJPMA Swing Swing Type · Sounds · Swing speeds Swing TypeBack and forth, side‑to‑side Sounds16 songs and nature sounds Swing speeds6 speeds