Per Apple Watch 4/3/2/1 44/42/40/38mm Custodia, Cinturini Protettivi in Pelle Mumba
[Compatible M odel ] : Compatible with Apple Watch (Series 4) 44mm/40mm, (Series 3/2/1) 42mm/38mm, Nike+, Sport & Edition. The depth of connector fits Apple Watch Band Series 4 much bettter than any other bands in the market.