Features: 4L large capacity, don\'t needs add liquid constantly. Transparents blue bottle, convenient to observe the change of water quantity. Ultrasonic cool mist technology, fine spray, small molecules humidify the air. Rotatable dual nozzle, 360 multiple angle large area moisting. Independent one-key switch control light, delicate night lamp. Tank top designed have groove, easy to lift and put down. Five-pointed star rotatable switch, easy to control. High quality ABS material, heat resistant, durable and wear-resistant, safe eco-friendly. With automatic protection of lacking liquid, safe and reliable.