HIGH COOLING EFFICIENCY: 4 litre air cooler unit with remote control and digital controls panel provides optimum cooling with a 4 litre water tank and 2 refillable ice packs (Included) providing ice-cold air similar to that you would get from a high-end air conditioning unit. With 3 wind settings (Normal, Natural or Sleep) and 3 fan speeds (Low, Medium, High), this portable unit can be used at full blast during the day as well as at night using the sleep mode which is ultra-quiet.