as a smart watch hI love my Apple Watch but as a sports watch it is lacking. I finally bought a garmin watch to record my cycling because my Apple Watch would die and it did not get all my info like cadence and more heart rate info. well there gramin also records sleep and it gives you all the info awake time and rem and deep and light sleep and your blood ox info. so I set my Apple Watch up for sleep and I wore both of them last night. only Saturday was from the Appel watch the rest are from the garmin. but here are the details you get with garmin verses Apple Watch. its a huge difference. my wife is blind and I set it up for her and the graph does not give her any info at all in VoiceOver.