At ₹999, it's the cheapest fitness band available. It's main features are it tracks number of steps you walk and your sleep.
Based on your height and weight, it calculates calories burnt and gives distance you've walked when you wear it. It had LED lights that show you how much is left. When you sleep, if you wear it and sleep, it'll tell you how long u slept, how many hours of deep sleep you had and so on.
This is the major part of the features of the band, that are meant for fitness. If your needs seem to match these, you can buy it. It has a battery backup of 40-45 days for a full charge.
Additional features are mostly meant for Mi Phones, such as Unlock Device, Vibration on Notification, Early Bird Alarm etc, though maybe available on other devices as well.
So it's a good buy, but see if you actually need it.