Four-in-one multi-function: Alfheim air cooler with Night light, refrigeration, humidification and air purification functions in one device, it allows you to creat a personal comfort zone. This portable fan can be used as a night light. Portable: The liftable design can be moved and installed, light and flexible, even if the volume is small, it will not affect the fan outlet performance. Small size(15.1*15*17.1CM), light weight (about 700g). Easy to Use: Alfheim air cooler equipped with USB power supply, more convenient to move, noise as low as 36dB. You just add water and ice to the water tank for quick cooling, runs up to 8 hours with a full tank(150ml). You can carry it with you and use it conveniently. Air Purification: Alfheim air cooler can purify the air, filter second-hand smoke and odors, allow fresh air around you. Healthy negative ions can better feel the freshness brought by negative ions. Warranty: We promise if you have any questions, we have 24-hour customer service for you. And we provided 1 year warranty and 30 day money back guaranteed.