5 YR Old Gear S3 Frontier vs Brand New G4 Classic Battery Life : r/GalaxyWatch
Samsung Gear S3 update brings battery life improvement - SamMobile
Amazon.com: WUHAO Battery for Samsung Gear S3 Frontier SM-R760 SM-R760N SM-R765 SM-R765T,Gear S3 Classic SM-R775T Replacement Battery, EB-BR760ABE for GH43-04699A Battery with DIY Repair Tools : Cell Phones & Accessories
Samsung Gear S3 Review: This is the smartwatch of the future we've been waiting for... [Video]
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
Samsung Gear S3 review: A chunky but top-notch smartwatch
Samsung Gear S3 frontier (R765A) - Battery Life - AT&T