Amazon.com: Compatible for Samsung Galaxy Watch Active 2 Band 44mm 40mm Women Men,20mm Smart Watch Band for Galaxy Watch 4 Band 44mm 40mm,Galaxy Watch 4 Classic Bands 46mm 42mm,Galaxy Watch Band 42mm/Watch
Samsung Galaxy Watch (Gear S4) 46mm Men's Tizen OS Health Tracking Smartwatch : Unboxing & Review - YouTube
Exclusive: Gear S4 (SM-R800) is being developed by Samsung - SamMobile