Bought for the baby room, I am satisfied with my purchase. The large capacity (5 liters) is practical and possible to take a whole night in case of large area. The sound is rather low, a small engine and a purring sound of water every few minutes. A bit like an aquarium, I guess. The noise is not disturbing at night (and might even rock your baby?) At full power, it is better to ask the humidifier height as the water settles quickly and therefore ends up on the floor. The thread of the socket is a bit too short. Also, you must purchase a hygrometer if you want to regulate humidity precisely because this humidifier is not provided. Good purchase and improvement of the sleeping baby.