Apple Watch 49mm [Black] Ocean Band [Black Titanium Finish]The Ocean Band is moulded in a high performance elastomer with a tubular geometry, allowing it to stretch for a perfect fit, even over a wetsuit. The corrosion resistant titanium buckle and adjustable loop secure the band during high speed water sports. For extra length, an extension band is sold separately perfect if you need extra length to wear the band over your wetsuit. Band Size One Size Band fits 130 to 200 millimetre wrists. Whats in the box?