Samsung Original Replacement Battery SM R750 For Samsung Gear S SM R750 R750 Smart Watch Authenic Rechargeable Battery 300mAh|Mobile Phone Batteries| - AliExpress
Amazon.com: MPF Products 170mAh EB-BR750, EB-BR750ABE Battery Replacement Compatible with Samsung Galaxy Gear S R750, SM-R750 Smartwatch with Installation Tools : Cell Phones & Accessories