Short answer
There is no true replica of Omega Caliber 8806. The movement is a METAS-certified Master Chronometer with a co-axial escapement, a silicon balance spring, and magnetic resistance rated to 15,000 gauss. Those parts cost real money to make, which is why almost everything sold as an "8806 replica" is a generic automatic or quartz movement sitting inside a case that copies the outside of the watch. The dial, the caseback engraving, and the box can look convincing. The movement cannot.
What Caliber 8806 really is
Caliber 8806 is an automatic Omega movement built to Master Chronometer standard, which means the finished watch, not just the movement, is tested by METAS. Those tests cover precision in multiple positions, performance at full and low power reserve, water resistance, and running accuracy while exposed to a 15,000-gauss magnetic field. On the technical side it uses Omega's co-axial escapement, a free-sprung balance, and a silicon hairspring that resists magnetism and temperature drift. Expect roughly 55 hours of power reserve and a beat rate of 25,200 vibrations per hour. It appears in several Seamaster and Aqua Terra references, usually with a date and a sapphire caseback that lets you see the rotor, bridges, and balance.
Omega Caliber 8806 Copy Watch Guide
Why "8806 replica" searches go wrong
Most listings that lead with the caliber number are using it as a keyword, not a spec sheet. Sellers name the movement because buyers search for it. Ask for a clear photo of the movement through the caseback and the story usually falls apart: the bridge shapes do not match, the jewel count is off, and the engraving is shallow. The most common giveaways are a solid caseback on a reference that should have a display back, a rotor that spins with no co-axial wheel visible under the balance, and a balance running at 21,600 vibrations per hour instead of 25,200.
Checks that matter
- Serial and reference: verify both against Omega's records and the pictogram card that ships with the warranty.
- Movement photos: request a sharp shot with the balance and rotor visible, never a stock image.
- Magnet test: a genuine Master Chronometer keeps time while sitting on a phone speaker magnet. Copies do not.
- Caseback engraving: font, depth, and spacing on the Seamaster hippocampus or Aqua Terra text are crisp and even.
- Price: a genuine 8806 watch sells used in the thousands. A fraction of that is not a deal, it is a different movement.
Bottom line
With the 8806, the movement is the product. Paying for a case that imitates it gets you the look and none of the engineering, no METAS certification, no five-year service record, no resale value. Buy from a seller who photographs the actual movement and offers a return window, and treat any listing that pushes the caliber number harder than the reference number as a warning sign rather than a selling point.