SAMSUNG Original Replacement Battery EB BR720ABE For Samsung Gear S2 classic SM R720 R720 R732 Smart Watch 250mAh|Mobile Phone Batteries| - AliExpress
Internal Battery For Samsung Galaxy Gear S2 3G S3 S4 Watch Active 2 SM-R800 | eBay
Amazon.com: MoKo Watch Band Compatible with Samsung Gear S2, Soft Silicone Replacement Sport Band fit Gear S2 (SM-R720 / SM-R730 ONLY) Smart Watch, NOT FIT S2 Classic (SM-R732 & SM-R735), NOT FIT
Battery for Samsung Galaxy S2 S3 S4 S5 S6 S7 S8 S9 S10 + Edge+ Mini Note J3 | eBay