This band works on bluetooth and needs to be set up with personal data like height, weight, step stride, etc. on the Fitrist app, available on Google Play and Apple store.
Other features: Music and camera control do work well, but might not be used frequently. You also get SMS, Whatsapp and call alerts when connected to phone via bluetooth. There is also a find-your-phone feature which again, works only when your phone is within the range. Lost phone feature activates the vibration on the band when the phone loses connection with the band. This might be irritating at times when there are frequent disconnections.
Battery life: 2-3 days, which was disappointing as they claim it to be 10 days on 2 hours of charging.