LED colours: With a seven-colour LED light cycle, your humidifier can provide ambience while humidifying the air. USB powered: No need for batteries, simply plug it in and switch in on. Two options: Choose between dark and light brown. Reduce odours Designed to reduce household odours and create a calm atmosphere. Air humidifier: Keep the air in your rooms clear with an ultrasonic air humidifier. Duration: Works for up to six hours on a full tank. Ultrasonic Led Air Humidifier | Living Social