It is fully automatic mechanical movement watch. It doesn't need battery. The winding mechanism is uni-directional and can be wound up both by manually rotating the crown or just by wearing it on daily basis. Minimum running duration is 36 hours.
A decent watch with premium look. This automatic watch will be a priced possession for those who love it. Elegance meets style. Thanks Flipkart for giving a good discount for this.But there is a catch. The time won't keep for 24 hours unless worn. I had expected a little more power reserve for this. There is a lag of about 1-2 mins in 24 hours. Other machines will last for more than 24 hours after winding but this has a little low power reserve