I’ve had this for 2 weeks and it does nothing to “keep my baby asleep longer” or “soothe” him, which are the very reasons why i bought this. My son falls asleep so well while in the car. This Zed Soother does not mimic being in a car. The vibrations aren’t hard enough, and nothing like a car. Yes, it has 6 vibra modes to choose from, but none of them work. I’ve tried all 6 in different positions around the mattress. Nap times and bed time is the same with this. Nothing has changed. My baby does not sleep any longer or shorter. I maybe would have had different results if I had gotten the other product (shaped like a rocket), as from the commercials, it seems to give off stronger vibrations.