Answer First

The Omega Speedmaster Date is an automatic chronograph with a date window at 3 o'clock. Case sizes are 39 mm and 40 mm. Movements include the Omega 1152 and 1155, both based on the Valjoux 7750. Beat rate is 28,800 vibrations per hour. Power reserve is about 44 hours. Replica versions copy the case shape and dial layout. Most replica units sold online use a Chinese 7750 clone, a Seagull ST19, or a quartz module. Prices run from $60 to $400. The movement sets the price, not the dial.

Reference Points on the Genuine Watch

Reference numbers in the line include 3511.50.00, 3513.50.00, 3210.50.00, and 3211.50.00. The date sits at 3 o'clock on a white disc with black print. Subdials sit at 6, 9, and 12 on most references. Crystals are sapphire on the genuine watch. Bracelets are steel with a folding clasp. Lug width differs between the 39 mm case and the 40 mm case, so straps do not swap between them.

Replica Build Groups

  • Automatic chronograph with a Chinese 7750 clone. 28,800 vph. Prices run $180 to $400.
  • Manual chronograph with a Seagull ST19. Prices run $120 to $250.
  • Quartz. Prices run $60 to $120. The chronograph second hand ticks at 1 Hz instead of sweeping.

Cases are 316L stainless steel in most listings. A small number use 904L steel. Crystals are mineral glass or sapphire. Case backs carry etched text rather than deep engraving. Crowns are push-pull on most units, not screw-down.

Checks Before You Pay

  1. Case size. Measure with calipers. A 39 mm case measures 39.0 mm to 39.2 mm across the bezel.
  2. Crystal. Sapphire resists a steel pick. Mineral glass scratches. Many replicas ship with mineral glass at any price.
  3. Chronograph reset. Start, stop, reset. All hands must return to 12. Misaligned subdial hands are common on quartz builds.
  4. Date change. The date flips at midnight on the genuine 1152. Some clones flip near noon or take two hours to finish.
  5. Weight. A genuine 39 mm Speedmaster Date on a steel bracelet weighs about 130 g. Replicas weigh less. Ask for a scale photo.
  6. Movement claims. A seller listing a Swiss ETA 7750 at $200 is not shipping a Swiss ETA. A new ETA 7750 alone costs more than that.

Price and Sourcing Notes

Price tracks the movement. Watch for stock photos. Ask for dated photos of the actual unit. Confirm the return window in writing before payment. Payment method matters as much as the listing copy.

Service and Resale

Replica watches carry no factory service. A watchmaker who works on a Chinese 7750 clone charges $80 to $150 for a clean and oil. Parts supply is uneven. Resale value is near zero. Genuine Speedmaster Date models sell used for about $1,500 to $3,000 depending on condition, box, and papers. A replica is not a genuine Omega product, and an Omega service center will not touch it.