Apple - Series 1, 2, 3 - 38mm/42mm Series 4, 5, 6 - 40mm/44mm Series 7 - 41mm/45mm Fossil - Gen 5E Smartwatch and Gen 5 Smartwatch - 22mm Hauwei - watch GT3 and Watch 3 Series 22mm Motorola - Moto 350 -20mm, Moto Watch 100 20mm Garmin - Venu 2 - 22mm and vivoactive 4 - 22mm