The hippocampus 2018 copy watch is a first copy of the Omega Seamaster Diver 300M that launched in 2018. Chinese-speaking collectors call the Seamaster "hippocampus" (seahorse), so both names point to the same model. A first copy should carry a 42mm case, a wave-pattern dial, a ceramic bezel and the date window at 6 o'clock.
The 2018 redesign changed the Seamaster line more than any update in the years before it. The dial moved to ceramic with laser-cut waves, the date shifted to 6 o'clock, and the watch gained a Master Chronometer movement. Copies followed fast, and the quality gap between them is wide.
What defines the 2018 hippocampus model?
Know the reference before you judge a copy. The 2018 diver has a set of features that earlier Seamasters do not share.
Hippocampus 2018 Fake: How to Tell What You Are Buying
- 42mm steel case, about 13.5mm thick, 20mm lugs.
- Ceramic dial with raised laser-cut waves that catch light in a rippled pattern.
- Ceramic bezel insert with a white enamel dive scale and a scalloped edge.
- Date window at 6 o'clock, not 3 o'clock.
- Conical helium escape valve at 10 o'clock.
- Skeleton hands with a broad arrow tip on the minute hand.
- Calibre 8800 movement, Master Chronometer certified, 55 hours of reserve, 300m rating.
- Tapered bracelet with a push-button adjustable clasp.
Why the wave dial matters most
The dial is the hardest part to copy well. On the original the waves are cut into ceramic, so light shifts as you turn the watch. Cheap copies print a flat pattern that looks grey and dead under indoor light.
What should you check on a first copy before paying?
Ask for measurements and photos, not marketing shots. Most complaints about hippocampus 2018 copies trace back to details the seller never showed.
- Case diameter and thickness. Ask for caliper photos. A 40mm case sold as 42mm is the common trick.
- Lug width. It should read 20mm. 22mm lugs mean the case is not a 2018 style.
- Date position. 6 o'clock only. A 3 o'clock date is a different generation.
- Bezel action. It should click in 60 steps with little back play.
- Dial texture. Look for daylight video, not a studio render.
- Helium valve. It should be conical and sit flush at 10 o'clock.
- Lume. Charge it for 30 seconds and photograph it. Uneven glow points to poor application.
- Bracelet end links. They should sit tight against the case with no gap.
Which movement comes inside a hippocampus 2018 copy?
Movement choice drives the price more than any other part. Three tiers turn up in online listings.
- Quartz: the second hand ticks once per second. Cheap, light and easy to spot.
- Basic automatic (2824 or 8215 clone): smooth sweep, 38 to 42 hours of reserve, no decoration on the rotor.
- Decorated automatic: engraved rotor, striped bridges, closer spacing of hands and crown positions. Still not a certified chronometer, and no copy carries a real METAS certificate.
A timegrapher video tells you more than a spec sheet. Ask for one and check the beat rate: 28,800 bph (8 beats per second) for the 2824 type, 21,600 bph for the 8215 type.
Can you wear a first copy hippocampus 2018 every day?
Yes, with limits. Treat it as a watch for the office and the pool deck, not one you dive with.
Many copies leave the factory with dry or missing gaskets, so the 300m marking on the caseback means nothing in practice. Splash resistance is realistic. Swimming is a gamble.
Common faults after a year or two: bezel enamel that chips, a crown that loses its thread, and a date wheel that slips if you set the date between 9pm and 3am. Set the date at 6am with the hands low on the dial to avoid the last one.
What do first copy hippocampus 2018 watches cost?
Prices sit in three bands. Shipping, box sets and extra straps push the total up by $30 to $60.
- $70 to $130: quartz or entry automatic, mineral glass, printed dial.
- $180 to $320: automatic movement, sapphire crystal, ceramic bezel, wave dial.
- $380 to $600: decorated movement, tighter tolerances, better bracelet finishing and lume.
Anything above that range is seller markup, not a better watch.
How do you buy one online without problems?
- Ask for QC photos with a timestamp and a ruler in frame.
- Request a short video of the second hand, the bezel turning and the crown screwing down.
- Pay with a method that has buyer protection. A direct bank transfer leaves you with nothing if the watch never ships.
- Confirm the exchange and return window before you pay, and read the shipping terms for customs.
- Check that the photos show the actual watch, not a stock image reused across ten listings.
FAQ
Is the first copy the same size as the original?
Good ones are. The target is 42mm across, about 13.5mm thick and 50mm from lug tip to lug tip. Ask for numbers before you buy.
What is the difference between a first copy and a AAA copy?
Sellers use the labels with no fixed meaning. "First copy" tends to point to the top tier a shop carries. Judge the dial, the movement and the case numbers, not the label.
Which colorway looks closest to the original?
The blue wave dial and the black wave dial are the most common and the easiest to copy. Steel with a blue dial is the safest pick for a first order.
Does it arrive with a box and papers?
Many listings include a box, a card and a manual. Those extras are copies too, so treat them as packaging rather than proof.
Can a jeweler tell it apart?
Yes, if they open the caseback. The movement, the engraving and the caseback threads give it away fast. Wear it for what it is and there is no issue.