1.Fan with humidifier 2.Purify air, freshen air, ... black/blue/green)Continuous Working:1400hours1. Operating PrincipleThe mist fan was designed with the advanced principle of double atomization. ... , outdoor bars, outdoor entertainment venues, stadiums, arenas, airports, bus stations, large gatherings, hotels cooling.dust extraction: farm, mine factory ... water. Water-proof Water Spray Mist Cooling Fan