Love this watch! I have purchased 5 other smart watches in the past but always lacked in certain areas. This one does not dissapoint especially in battery life. I have had this one for over a week and still have not had to charge it. I also like the ecg feature. Very cool! Love this watch! I have purchased 5 other smart watches in the past but always lacked in certain areas. This one does not dissapoint especially in battery life. I have had this one for over a week and still have not had to charge it. I also like the ecg feature. Very cool!