Amazon.com: LCLEBM 520mAh Battery for Samsung Gear S3 Frontier (SM-R760),Galaxy Gear S3 Classic Replacement Battery for SM-R770,BR760,R765,EB-BR760ABE Gear S3 Battery with Professional DIY Repair Tools : Cell Phones & Accessories
Hands-On: The Samsung Gear S3 Smartwatch Classic And Frontier (Designed By The Guy Who Brought You The Titanic DNA Watch From Romain Jerome) - Hodinkee
Samsung Gear S3 review: giving a full-on phone-on-a-watch a third go - CNET