Extend the battery life of your Samsung Gear S3 Smartwatch with these battery saving tips - PhoneRadar
Samsung Gear S3 Frontier Day 12 review - Battery life, timer, calendar, S Health Running & more - YouTube
Just replaced my Gear S3 battery (24$ + 10$ for tools). Excited to get 3+ days back. Links in comments, will report back with new battery life in a few days. : r/GearS3