Pigeon Consta Cool 12627 15-Litre Air Cooler (Multicolor) Pigeon constant cool is a durable, compact ,portable and personal cooler that can be placed in offices as well in bedrooms for effective cooling, it is constructed from corrosion-free, engineered ABS material that makes it a long lasting performer, it comes with castor wheels for mobility and works on powerful motor that generates less noise, this cooler from pigeon has 15 liters of water tank capacity . Pigeon constacool is rechargeable and can be used upto 7 hrs without power.