This is the best fitness band at low cost which helps us to keep track on walk and sleep daily . well design and looking premium and styles it’s battery backup is wonderful.witch is up to 25 days . we can wear it daily . sleep track works fine. step tracking was also decently accurate. wake up alarm and call alert functions work well .device should be connected with the mobile through bluetooth and bluetooth range is very decent. overall it’s good quality product in the low price. I am happy with it .