Omega Speedmaster Mark IV | 4.5 Automatic Chronograph | Ref. 176.0012
$2,927.50
Skip to product information
The Omega Speedmaster Mark 4.5 (ref. 176.0012) is a vintage automatic chronograph that blends classic 1970s design with modern (for its era) mechanical reliability. It uses the robust Caliber 1045 (Lemania-5100 based) automatic movement, delivering day/date, 24-hour indication, and chronograph functionality. Though unofficially dubbed “Mark 4.5” by collectors, the 176.0012 pairs the case style of the earlier Mark IV with the automatic movement of later Speedmasters — giving it a unique place in the Speedmaster lineage.
Omega Speedmaster Mark IV | 4.5 Automatic Chronograph | Ref. 176.0012
$2,927.50
Omega Speedmaster Mark IV4.5 Automatic Chronograph | Ref. 176.0012 | Caliber 1045
The Omega Speedmaster Mark 4.5 (ref. 176.0012) is a vintage automatic chronograph that blends classic 1970s design with modern (for its era) mechanical reliability. It uses the robust Caliber 1045 (Lemania-5100 based) automatic movement, delivering day/date, 24-hour indication, and chronograph functionality. Though unofficially dubbed “Mark 4.5” by collectors, the 176.0012 pairs the case style of the earlier Mark IV with the automatic movement of later Speedmasters — giving it a unique place in the Speedmaster lineage.
Technical Data
• Reference: 176.0012 / ST 176.0012
• Movement: Automatic — Caliber 1045
• Functions: Hours, minutes, small seconds, day, date, 24-hour indicator, chronograph, tachymeter.
• Case Material: Stainless steel
• Case Size: 42.0 mm
• Dial: Black
• Crystal: Mineral glass
• Bracelet / Strap: Stainless steel bracelet
• Water Resistance: Not Guaranteed on Vintage Watches