Buy Spigen Retro Fit Designed For Samsung Galaxy Watch 4 Band 44mm/40mm, Galaxy Watch 4 Classic Band 46mm/42mm, Galaxy Watch 3 Band 41mm, Galaxy Watch Active 1&2 Band – Brown Online in
Made a rough size comparison between galaxy watch 4 and Apple watch series 7 when doing my shopping, maybe this will help someone else. : r/GalaxyWatch
Amazon.co.jp: Compatible with Samsung Galaxy Watch 4 / Galaxy Wacth 4 Classic / Galaxy Watch 3 41 mm 45 mm, Stainless Steel Magnetic Watch Band for Galaxy Watch 42 mm 46 mm,