Seiko Titanium Chronograph SNAB91 (or SNAB91P1) Movement: Japanese Quartz movement, Caliber 7T62. Case & Bracelet: Fully made of titanium, a material that is twice as light as stainless steel and more resistant to rust and skin allergies. Crystal: Hardlex crystal, resistant to scratches. Size: Case diameter is approximately 43–45 mm, with a case thickness of around 11 mm. Water Resistance: Up to 100 meters. Chronograph: Stopwatch function measuring up to 60 minutes with split-second precision. Alarm: A sub-dial at 6 o’clock dedicated to a one-time alarm, which can also be used as a second time zone display. Tachymeter: Scale on the outer bezel used to calculate speed based on travel time. Lume: Hands and hour markers are coated with LumiBrite for excellent visibility in complete darkness.