It might be too late since I already purchased it, but does it useful for indoor sport? (treadmill, indoor bikes, Weights) - it seems that the watch faces, most of measurements, screens are targeted at outdoor sport.
What am I missing?
It might be too late since I already purchased it, but does it useful for indoor sport? (treadmill, indoor bikes, Weights) - it seems that the watch faces, most of measurements, screens are targeted at outdoor sport.
What am I missing?
You're missing lots. Yes it's a GPS enabled sports watch meant primarily for outdoor sports. However, there are people who do use it quite successfully for indoor activities as you indicate. Garmin have actually just released watch-based videos for yoga, pilates and strength workouts. Take a little time to read through the manual, read through the Garmin posts about the watch, and read through the forum posts. Then you will be able to ask specific questions to help you get the best from you watch to suit your specific needs.
I use both my MARQ and Fenix 6X Pro Solar regularly to record strength training, indoor rowing (Concept 2) and indoor cycling (Wattbike); all of which work well. The rep counting in strength training works fine for basic movements of 5 or more reps per set (Squat, bench press and even pull up), but is not so cool for more complex weightlifting moves such as a clean and press or low reps (4 reps or less per set).
The one piece of advice I'd offer is buy (If you don't have one) a HR Chest strap if you want HR data for strength training, rowing or anything else that involves flexing and gripping with your arms; I've not found a single OHR based watch or arm strap that works satisfactorily for those activity types.