I'm contemplating whether to use the Apple Watch Se 2 or the Garmin. I know the Garmin will go for way more hours than I can run. The last time I ran with the Apple Watch I got about 4.5 hours with the HRM running, at which point I was prompted to got to reserve power mode - so I turned off the radios by going into Airplane Mode, which seemed to prolong battery life just long enough to finish the training run. Some of you will suggest this, so I'll say here that if I'm going to run with the HRM off, I might as well just use the Garmin watch instead. So question is, how long will the Apple Watch Series 2 last for running, with Airplane Mode on and the HRM running?
Any help will be apprecited.
I didn't find the right solution from the Internet.