I am a fitness lover so I buyed it from mi online shop the Courier service is impressive . but after test this band little bit disappointment because of wrong steps count but the good factor is that it gives decent in tracking your sleep quality .but counting steps is wrong because senser count the step by hand movement so if you move your hand while you not moving then it gives wrong result.for alert of call or any other notification this is good option and its new model coming soon which is also with heart rate senser .