Made with a durable 45mm steel case, black dial and black rubber black strap, water resistant to 200 meters. - Swiss-made - Constant glow for up to 25 years - Time/date functions - Movement: Swiss quartz - Caliber: RONDA 715 - Water-resistance: 200m (20 ATM) - Case diameter: 45mm - Bezel: unidirectional rotating - Case material: 316L stainless steel - Case back: 316L stainless steel screw-in see through - Crystal: sapphire, anti-reflective coating - Crown: screw-in, crown protected - Strap / bracelet: black genuine rubber - Strap / bracelet buckle: black CARBONOX - Lug width: 24mm - Case height: 13mm - Weight: 105g - Approximate battery life: 6 years