My expectations weren’t too high but I was pleasantly surprised. I quickly put the app on my iPhone and started using it right away. The process was so quick and easy. The watch band itself is extremely light and a snap to wipe off.There are a variety of faces available (for free) to choose from and just as quick to change. You can wear the watch to bed and track not only your sleep but even your period of light sleep, deep sleep and REM.My wrists are small so it does take a minute to find a comfortable spot to wear it but once you’ve found a good position, it’s so comfortable you forget it’s there. You can also set it to track your exercise program or indoor/outdoor walking, calorie tracking, heart rate, even your stress reaction level. This was genuinely a great purchase and the price makes it outstanding.