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
Samsung Gear S2 3G review: I don't know if I want a smartwatch that's also a phone - CNET