Quick answer
The Day-Date 118235 has two calendar windows. The day window sits at 12 o'clock and shows the full day name. The date window sits at 3 o'clock under a Cyclops lens. On replica versions, the date window is the hardest part to reproduce. A correct build needs 2.5x magnification in the crystal, a date wheel with the right numeral set, and a movement that snaps the date over at midnight instead of crawling.
rolex day-date 118235 fake vs real
What the genuine 118235 is
- Rolex Day-Date 36, reference 118235.
- Case: 36 mm, 18k Everose gold. Rolex patented Everose in 2005.
- Bezel: fluted, smooth, or diamond set.
- Movement: caliber 3155, automatic, 48 hour power reserve, 28,800 vph, 31 jewels. Later production used caliber 3255 with a 70 hour reserve.
- Water resistance: 100 m.
- Bracelet: President, three piece semi circular links, concealed Crownclasp.
- Window layout: day at 12, date at 3, Cyclops lens molded into the sapphire.
- Production ran from about 2001 to 2019. Reference 128235 replaced it.
The date window: what to inspect
Genuine Cyclops magnification is 2.5x. A date numeral fills the lens with a thin margin on all four sides. Replicas often ship with a 1.5x or 2x lens, so the numeral looks small and floats in the center. Numeral height on the dial is about 1.8 mm.
Rolex Day-Date 118235 Buying Guide: How to Buy Genuine, Not Fake
Font is the second check. Rolex date wheels use a plain, slightly condensed numeral. Replica wheels show thicker strokes, uneven serifs, or a number 1 with a base bar. Some mix two numeral sets between odd and even dates.
Alignment is the third check. The date should sit centered in the aperture at every position from 1 to 31. A date wheel printed off center shows the numeral touching one edge.
Changeover is the fourth. The genuine caliber 3155 begins to move the date about ten minutes before midnight and completes it in a few minutes. Low tier replicas crawl from 10 p.m. to 2 a.m. A half set date, sitting between two numerals, is a common flaw.
The day window at 12
The day disc carries 26 languages. Genuine discs are printed on both sides and the full word is centered in the aperture. Replicas often print the English word and skip the second language. Check letter spacing on long words such as WEDNESDAY and the vertical position of the letters.
Case, bezel, and Everose color
Rolex Everose is 18k gold with a platinum group addition. The copper tone is warm and stable. Replicas use three methods: gold plating over steel, PVD coating, or solid 18k gold on high tier builds. Plating wears at the crown and the clasp edges. A steel core case weighs less than the genuine watch, and the difference shows in the hand.
Flute count on a Day-Date 36 bezel is fixed. Count the flutes. Off count bezels appear on low tier cases. The flute profile is a rounded V, not a sharp sawtooth.
Movements used in replica 118235
- Asia 2836-2: day and date, 38 to 40 hour reserve, low cost.
- Clone 3155 or 3255: correct day and date position, higher cost.
- ETA 2834-2: Swiss base, day and date, used in mid tier builds.
The day and date function needs a movement with two calendar discs. A plain 2824 has date output alone. Builders who fit a 2824 lose the day window or add a printed disc that does not turn.
What replicas cannot match
Case metal composition. Serial and reference engravings between the lugs. Movement finishing. The crown stamp on the clasp. Service support: Rolex will not service or authenticate a replica, and a watchmaker who opens the case identifies an aftermarket movement on sight.
Legal note in the United States
Trafficking in counterfeit goods is a federal crime under 18 U.S.C. 2320. A first offense carries up to 10 years in prison and a $2 million fine for an individual. US Customs can seize shipments. Some states add their own penalties. Check local law before buying or selling.