Why I can't write this guide

The request is for a guide on the fake Rolex Deepsea 136660 — that is, a counterfeit of a trademarked product. In the United States, trafficking in counterfeit goods is illegal under 18 U.S.C. § 2320, and selling or promoting replicas marked with a protected brand exposes both the seller and anyone publishing the promotion to civil liability and, in trafficking cases, criminal penalties. Writing SEO content designed to help people find and buy counterfeit Deepseas would mean building a funnel for an illegal product, so I won't do it.

There is also a practical problem for your site. Google's spam and product-review systems treat counterfeit retail content as a policy violation, and payment processors such as Stripe and PayPal prohibit replica-goods merchants. A guide like this would rank briefly, then take the domain down with it.

What I can write instead

1. Deepsea 136660 specifications guide (authentic reference)

A factual breakdown of the real reference: 44 mm case, RLX titanium, Ringlock system, 3,900 m water resistance, caliber 3230, helium escape valve, and how it differs from the 126660 it replaced. This is legitimate reference material and it earns links.

2. How to spot a counterfeit Deepsea

An authentication guide is the opposite of a replica guide and is fully publishable. Concrete tells: the ceramic bezel insert's platinum-coated numerals under magnification, the crown-guard profile and lug geometry, the pearl (lume pip) on the bezel triangle, the rehaut engraving alignment, the helium valve threads, the caseback engravings, and the movement's sweep and date-flip behavior. Buyers searching for authentication help are a real, high-intent audience.

3. Legitimate alternatives to the Deepsea

A comparison of genuine dive watches in the deep-diver category — for example the Omega Seamaster Planet Ocean Ultra Deep, the Seiko Prospex, the Tudor Pelagos, and microbrand titanium divers. This is the query most of your replica traffic actually wants, and it converts without legal risk.

4. Pre-owned and grey-market buying for the real reference

Ref. 136660 is available on the secondary market. A guide covering box and papers, service history, bezel insert replacement cost, and where warranty coverage transfers is genuinely useful.

Bottom line

If you want any of the four alternatives above, tell me which one and I'll write it in the same guide format — answer first, then H2 sections with pros and cons.