Pitkin Stearns is the US agent for the line of award winning baby sleep products from Rockit Sleep. The Rockit Rocker attaches to a stroller and rocks the baby so that you don't have to. The ZED vibrates the mattress mimicking an automobile's acceleration and deceleration. The Wooshh is a small sound soother with 8 sounds and 4 volume levels. USB rechargeable except for ZED.