Pre-owned Omega Speedmaster Chronograph Tachymeter Watch - Ref. 311.63.44.51.99.001

A pre-owned men's Omega Speedmaster chronograph tachymeter watch, model number 311.63.44.51.99.001. Features a grey ceramic case and a grey alligator leather strap. Equipped with an 18kt yellow gold fixed bezel incorporating a silicon grey nitride top ring for the tachymeter scale. The dial is crafted from grey meteorite material, accented by luminous-coated 18kt yellow gold hands and index hour markers set against indices on the outer rim. Luminescent function allows for easy reading in low light conditions. Includes a date display positioned at the six o'clock mark. Chronograph mechanism incorporates two sub-dials: one for measuring elapsed seconds, another for minutes (up to 60) and hours (up to 12). Powered by an automatic movement, Omega Calibre 9300, featuring approximately 54 jewels and comprising around 337 parts. The escapement operates at a frequency of 28,800 vph (beats per hour), ensuring precision chronometry. Offers about 60 hours of power reserve when fully wound down. Secured with a scratch-resistant sapphire crystal lens. Features a pull/push crown for winding and setting the time. Includes a transparent case back allowing view of the movement. The round case measures 44.25 mm in diameter, with a thickness of 16.5 mm. Clasped securely by an Omega titanium deployment clasp. Water resistant up to depths equivalent to 50 meters or approximately 165 feet. Functions include: chronograph timing, date display, hour reading, minute reading, second hand operation, and tachymeter capability for measuring speed based on time traveled over a known distance.