The Luminox Sea Lion 44 mm 2050 Series X2.2059.2 pairs an ultralight CARBONOX™ case with a durable silicone/rubber strap and permanent Luminox illumination for reliable low-light visibility and water performance. Key attributes: Black | CARBONOX™ | 10 ATM / 100 m water resistance | Luminox Light Technology — permanent self-illumination (up to 25 years) | Ultralight and shock-resistant case | Hours, minutes, seconds, date | Swiss quartz movement RONDA 515 | Silicone/Rubber strap with pin buckle | Unidirectional diver-style bezel | Hardened mineral crystal | Carbon composite case | Dimensions & fit: Case diameter: 44 mm | Case height: approx. 14 mm | Composition & care: CARBONOX™ | Silicone/Rubber | Hardened mineral glass