The sea is calling. Built to withstand jet-skiing in Maunalua Bay or kitesurfing in Tarifa. Hike, run, dive. There's a strap for that. Making the ultimate sports watch for athletes of all kinds required a unique approach. That's why specialised straps for outdoor adventures, endurance training and water sports are as meticulously crafted.he Bands for Apple watch adopts new innovative corrosion-resistant titanium buckle design, with adjustable loop secure the band during high-speed water sports.The Ocean Band for Apple watch is molded in a high performance elastomer with a tubular geometry allowing it to stretch for a perfect fit, even over a wetsuit. The Ocean Band for Apple Watch band 44mm 45mm 49mm 42mm,for Apple watch series Ultra/8/7/6/5/4/3/2/1,all models. 42mm/44mm/45mm/49mm fits the wrist size 5.9"-7.9" (150-200mm) It is adjustable to fit different people's big or small wrist sizes.