The one air cooler to buy at 6k

Symphony Ice Cube 27 Personal air cooler

Works for 16 sq mEters of room

That is pretty good for a medium room

And 27 liters water tank should last for 4 hours

And 27 liters water tank should last for 4 hours

And it consumes around 105 watts! Which is pretty  decent

So it will cost you 7-8 INR for 10 hours!

Buy from the link below!