It is fitness tracker only we doest call with this device it has also a very low battry backup . We listen only music in this watch we doesnt play video in this watch . It is useless watch for alll peoples . It is good for those who do gym in there life . It calculates your food steps with the help of the. Pedometre . It has a heart rating sensor which calculate your heart beats . It is not in use of mine or if you want to buy I suggest dont but this samsung gear fit2 smart watch because it is not a smart it is only a firness tracker