Analog chronograph men's wristwatch with manual winding movement, featuring a white dial accented by black hour markers and hands treated with luminous material for enhanced legibility in darkness. Includes a tachymeter scale on the outer bezel crafted from black aluminium capable of measuring speed based on time elapsed over distance covered. The case is constructed from silver-tone stainless steel finished to a polished, brushed, or matte surface depending on specific model elements.
Key Features: Manual-winding Omega Calibre 3861 movement (derived from Lemania 1873), luminous markers and hands for night-time reading, black aluminium bezel insert with tachymeter scale, round case measuring 42mm in diameter and approximately 13.2mm thick, silver-tone stainless steel bracelet crafted from polished or matte material.
Strap/Band: Likely refers to the sport style bracelet (silver-tone stainless steel).
Functions: Hour, minute, second subdials; Running seconds display via chronograph function across multiple registers on the dial. Analog timekeeping with central hour, minute and second hands.
Style/Design: Sport watch design incorporating a prominent tachymeter scale for speed calculation. White dial provides a clean background for black indices and luminous elements.
Water Resistance: Rated at 50 meters (165 feet) which typically corresponds to dust/wind resistance plus light water immersion (not scuba diving). Equates roughly to ISO standard 6429 air pressure test levels, but exact testing may vary by model. The reference number provided is for the specific Speedmaster Chronograph Hand-Wind White Dial Men's Watch.
Additional Details: Includes screw-down winding/crown and a transparent sapphire crystal case back resistant to scratches.
