What is the replica Rolex 16660?
The replica Rolex 16660 is a copy of the Rolex Sea-Dweller Triple Six, a 40 mm dive watch Rolex produced from 1978 to 1989. The original carries a 1,220 m (4,000 ft) depth rating, a sapphire crystal, and a helium escape valve on the left case flank. A good replica copies the case profile, crown guards, bezel insert, and dial layout.
A poor one misses the crystal height, the insert font, and the shape of the guards. Replicas of this reference span a wide range, from $80 quartz builds to $1,000 Swiss-movement copies. The sections below cover what each tier gets right.
Original Rolex 16660 specs a replica should match
- Case: 40 mm stainless steel, about 15 mm thick, with crown guards at 3 o'clock
- Depth rating: 1,220 m / 4,000 ft
- Crystal: sapphire, about 1 mm thicker than the acrylic on the 1665 that came before it
- Bezel: unidirectional 60-minute dive bezel, black insert, minute markers for the first 15 minutes
- Movement: Rolex caliber 3035, 27 jewels, 28,800 vph, quick-set date
- Dial: matte black with tritium lume plots and printed depth text
- Bracelet: Oyster-style with a flip-lock dive clasp
How to judge a replica 16660 before you buy
Case and crown guards
The Sea-Dweller case sits deeper than a Submariner case from the same era, and the crown guards on the 16660 have a wider, flatter shoulder than the 16610. Cheap replicas machine those guards too thin or too sharp. Ask for side-profile photos with the crown screwed down.
Helium escape valve
Look at 9 o'clock. The valve on the original sits flush with the case flank and has a flat slot head. Replicas with a raised, shiny valve or a glued-on cap stand out right away.
Crystal and cyclops
The 16660 uses a sapphire crystal with no cyclops magnifier over the date window. Any replica with a bubble magnifier follows a Submariner design, not this reference. Crystal height matters too: a dome that towers over the bezel reads as wrong.
Bezel insert
Font weight and the pip at 12 o'clock are the tells. Originals show crisp, deep engraving and a pearl set inside a metal ring. Weak replicas show shallow printing and a plastic-looking pip.
Dial and hands
The matte dial should swallow light, not bounce it back. Lume plots sit in gold surrounds, and the hands match the plot color. Mixed shades (green plots, orange hands) point to a parts-bin build.
Movement
Open the case back or ask the seller for a movement photo. Common choices are the ETA 2824, the Seagull ST2130, the DG2813, and clone 3135 movements. A clone 3135 matches the winding direction and date action of the original, while ETA and Seagull builds cost less and take parts from any watchmaker.
1665 vs 16660 vs 16600: which Sea-Dweller replica fits you?
- 1665 (1967 to 1978): acrylic crystal, 610 m rating, thinner case. Lighter on the wrist, and the acrylic picks up scratches.
- 16660 (1978 to 1989): sapphire crystal, 1,220 m rating, caliber 3035. The reference this guide covers.
- 16600 (1988 to 2008): same case and rating as the 16660 with the caliber 3135. Closer to modern specs and easier to source.
Replica makers build all three. The 16660 sits in the middle: vintage looks with a sapphire crystal that survives daily wear.
Replica Rolex 16660 price tiers
- $80 to $180: quartz or basic automatic, plated steel, mineral glass, stamped clasp. Fine for photos, not for water.
- $200 to $500: 316L steel, sapphire crystal, Seagull or ETA automatic, clean dial print. The value tier.
- $500 to $1,200+: 904L or 316L steel, clone 3135 movement, correct crown guards, and an insert with the right font.
Price tracks three things: the steel alloy, the movement, and the dial. Ask what the case is made of and what sits inside before you compare two listings.
Questions to ask before you buy
- Which movement is inside, and can you send a photo of it?
- Is the case 316L or 904L steel?
- Is the crystal sapphire, and does it sit at the correct height?
- Has the watch been pressure-tested, and at what depth?
- Do the lume plots and hands match in color?
Care and maintenance for a replica 16660
Treat a replica like any automatic watch. Rinse it in fresh water after saltwater contact, and keep the crown screwed down. Have a watchmaker check the gaskets every two years if you swim with it.
Replica water resistance claims run high. A $150 build listed at 100 m often holds no more than splash protection. Pressure testing costs little and protects the movement.
FAQ about the replica Rolex 16660
Does a replica Rolex 16660 hold its value?
No. Replica watches lose value the moment you wear them, and there is no resale market like the one for genuine Rolex. Buy one to wear, not to flip.
Can I swim with a replica 16660?
Only if a watchmaker pressure-tests it first. Stock gaskets on budget replicas fail, and a flooded movement costs more to replace than the watch. High-end builds with tested seals handle pools and light diving.
What is the best movement for a 16660 replica?
An ETA 2824 or Seagull ST2130 gives steady timekeeping and cheap service. A clone 3135 copies the winding and date feel of the original. Quartz movements keep the cost low but skip the point of a mechanical dive watch.
How do I spot a low-quality 16660 replica?
Check the crystal (a cyclops is wrong), the helium valve at 9 o'clock, the crown guard shape, and the insert font. Fuzzy dial print, a rattling bezel, and a clasp that flexes under thumb pressure are other signs.