Performance | Samsung Gear S3 - The Official Samsung Galaxy Site
Extend the battery life of your Samsung Gear S3 Smartwatch with these battery saving tips - PhoneRadar
Samsung Gear S3 Frontier review: Outclassing most smartwatches in the market - SamMobile - SamMobile
SAMSUNG Original Replacement Battery EB BR760ABE For Samsung Gear S3 Frontier / Classic Smart Watch SM R760 SM R770 SM R765|Mobile Phone Batteries| - AliExpress
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