Coros is the market leader when it comes to battery life. The only thing I don't like is that the watch strap could be better, seems fragile and needs a better clasp.
Coros PACE 2 Premium GPS Sport Watch: Heart Rate Monitor, 30h Full GPS Battery, Barometer, Strava & TrainingPeaks Compatible
20 Review
Polar Vantage M Smart Watch, Black
33 Review
Improved SEO: Garmin Forerunner 935 Black Running GPS Unit (010-01746-00)
25 Review
Garmin Forerunner 45: Easy-to-Use GPS Running Watch with Free Training Plan Support in Red
21 Review
Garmin MS RA70CV Cover Fusion 010 12466 01
5 Review
๐ Enhance Your Marine and Lake Navigation with Navionics Plus Regions West Charts on SD/MSD
6 Review
Garmin GC 100 Wireless Camera: High Quality and Easy-to-Use, Model 010-01865-30
5 Review
๐บ๏ธ Enhance Your Navigation with Garmin BlueChart g2 California/Mexico Saltwater Map microSD Card
7 Review