Earlier quoted context omitted.
Also have a Garmin 735xt for the same reasons. Another big issue is battery life. Garmin can go for a solid week or more between charges, while Apple Watch is about a day.
Can someone describe the other benefits of a Garmin over an Apple Watch for jogging? I use my Watch for light jogging, monitoring heart rate, pace, and distance. Recently, I’ve been trying to increase days, and will up my mileage in a couple months, after I lose a little more weight.
The Apple watch...it has a GPS and heart-rate monitor. They're fine if you just want a general idea of how fast you're going (to an accuracy of +/- 30 sec/mile pace) or heart rate (to an accuracy of +/- 10 hbpm).
If you are tracking trends, this inaccuracy is fine since it's the trend that matters. But if the actual numbers matter, go with the Garmin (or Polar, or Suunto) and leave the iWatch at home.