I have an Epix 2. Would love too use an Apple Watch instead (have tried - bought 3 apple watches since their release and always end up going back to my Fenix. I use the Garmin for sleep metrics, training and well as tracking my MTB activities 4-5 times a week lasting 3-4 hours a time. I charge my watch probably 15 minutes every 3-4 days and it doesn't run out. The day I can do that with an Apple Watch I will certainly buy one.