Developed and manufactured by Rolex, the new Oysterflex bracelet is the distinctive feature of this new addition to the Yacht-Master series, enhancing comfort and flexibility without compromising waterproofness and reliability. The 18K Everose gold Oyster case offers 100m water resistance owing to its screw-down case back, monobloc middle case and Triplock triple waterproof system for the screw-down crown. It also features scratch-resistant sapphire with Cyclops lens over the date, as well as rotational 60-minute graduated bezel with Cerachrom insert in black ceramic and raised numerals. The black dial with luminescent hands and hour markers features centre hands for hours, minutes and seconds, as well as instantaneous date in an aperture. The automatic perpetual 3135 caliber manufactured by Rolex and certified by COSC features bi-directional winding via Perpetual rotor and Paramagnetic blue Parachrom hairspring. The new Oysterflex bracelet is made of flexible metal blades overmoulded with high-performance elastomer for the optimal mix of comfort and robustness.