Digital Skyair Air Cooler 80 Liters. It has a timer setting, swing mode, 20-inch fan, and wheels for easy movement. The temperature drops to 22/23 degrees. The current price is 52,500 Taka; you can check Google for the price. Once filled with water, it runs for a whole week. It is a very good air cooler with honeycomb pads on 3 sides for rapid cooling.