You definitely get what you pay for. I honestly bought it because I love the face with the space person flying. I've attempted to find answers on how to track my sleep, unsuccessfully. It's not a well known brand so it's difficult finding help/answers on how to work the watch. It also doesn't track your heart throughout the day. You will have to press a button and it will only track your heart in that instance. Knowing the above I wouldn't have originally bought this watch. Upside is that it is really cute.