Part of the dive-ready promaster sea collection, this citizen timepiece marks a unique take on professional-grade style and performance. 46mm stainless steel case with screw-down crown, black easy-grip bezel and anti-reflective sapphire crystal gradient red dial with date display magnetic-resistant; 365-day power reserve eco-drive is powered by any light source, continuously and sustainably, eliminating the need to replace watch batteries benebiol™ pu strap includes plant-based materials; buckle clasp 300-meter water resistance caliber e365