New submitter IMightB writes: My question is basically what is the best smart watch style device for runners. Must have features GPS, bluetooth and music storage for roughly 5 hours of use during a marathon. Pretty much everything else is a nice to have. My wife has recently decided to enter her first marathon and unfortunately, the other day during a training run her 7gen iPod Mini gave up the ghost due to moisture accumulating in the armband and her Garmin Forerunner 15 only lasts about 3 hours with GPS on (despite Manufacturer claims to the contrary). She would like to consolidate devices down to something with a watch style format and start using a bluetooth headset. I currently use, and really like, a pair of aging Jaybird JF3's for a bluetooth headset and will probably recommend to her whatever Jaybirds current equivalent is in their lineup. But the watch portion is eluding me still. Based on my current research, the Sony SmartWatch 3 may be the only one that fits my wife's 'Must have Requirements' Are there other options available? Can anyone with marathon or distance running experience share their thoughts on this subject? Thanks in Advance.