The Samsung Gear S3 does track your sleep. You can check your stats in the Samsung S Health App on your phone.
It is definitely not the BEST sleep tracking smartwatch or fitness tracker because it is so bulky. However, it will get the job done!
About David Nerdie
My name is David and I'm a total tech nerd. I always have been and always will be. I've really gotten into smartwatches since they've come out. They show great potential to change our lives almost as much, if not just as much, as smartphones have. I'm also an internet entrepreneur that makes my living via tech. Feel free to contact me with any questions or comments you have!