Rolex Deepsea Buying Guide: 136660, D-Blue, Gold & Deepsea Challenge
Compare the current steel Deepsea in black and D-Blue, the yellow-gold Deepsea, previous generations and the 50 mm RLX titanium Deepsea Challenge by depth rating, engineering, fit and condition.
Reviewed by the Superlative Watch Co. Buying Desk · Updated July 17, 2026
Current Deepsea range
The standard current Deepsea is a 44 mm saturation-diving watch built around Rolex’s Ringlock system. Steel reference 136660 is offered with a black dial or the D-Blue gradient dial. The yellow-gold reference 136668LB adds an 18 kt yellow-gold case and bracelet with a blue bezel and dial. Current standard Deepsea watches use calibre 3235 and provide approximately 70 hours of power reserve.
| Reference / dial | Material | Buyer profile |
|---|---|---|
| 136660 black | Oystersteel | Most visually restrained current standard Deepsea. |
| 136660 D-Blue | Oystersteel | Signature blue-to-black gradient and green DEEPSEA text. |
| 136668LB | 18 kt yellow gold | Extreme dive-watch engineering combined with maximum precious-metal presence. |
| 126067 Deepsea Challenge | RLX titanium | Collector who wants the most extreme current Rolex dive architecture. |
Black vs. D-Blue vs. gold
| Factor | Black steel | D-Blue steel | Yellow gold |
|---|---|---|---|
| Character | Technical and understated | Most recognizable Deepsea dial | Bold high-luxury statement |
| Visual size | Darkest, most compact-looking | Gradient draws attention across the dial | Gold amplifies mass and presence |
| Weight | Very substantial | Very substantial | Exceptionally heavy |
| Wear visibility | Brushed steel is relatively forgiving | Same case wear as black steel | Gold bracelet and case show marks readily |
| Buyer priority | Engineering first | Engineering plus signature identity | Rarity, material and spectacle |
How the Ringlock system works
The standard Deepsea achieves approximately 3,900 metres—or 12,800 feet—of water resistance through an architecture that includes a high-performance compression ring, a very thick sapphire crystal, a helium escape valve and a reinforced caseback. The system is not merely a marketing name; it is the reason the watch is thicker and more top-heavy than Sea-Dweller.
| Component | Role | Ownership implication |
|---|---|---|
| Compression ring | Supports resistance to enormous external pressure | Creates structural mass and thickness. |
| Thick sapphire crystal | Resists pressure over the dial opening | Contributes to the watch’s distinctive profile. |
| Helium escape valve | Allows gas to exit during decompression | Relevant to saturation diving, but still part of condition review. |
| Glidelock bracelet | Fine extension adjustment | Essential for stabilizing a heavy case on the wrist. |
Deepsea Challenge 126067
The Deepsea Challenge expands the concept dramatically: a 50 mm case in RLX titanium, approximately 11,000 metres—or 36,090 feet—of water resistance, a massive sapphire crystal and calibre 3230. Titanium reduces mass relative to steel, but the dimensions remain extraordinary.
| Factor | Deepsea 136660 | Deepsea Challenge 126067 |
|---|---|---|
| Diameter | 44 mm | 50 mm |
| Material | Oystersteel | RLX titanium |
| Depth rating | 3,900 m | 11,000 m |
| Movement | Calibre 3235 with date | Calibre 3230, time only |
| Daily wear | Large but feasible for the right wrist | Highly specialized collector proposition |
Deepsea generations
| Reference | Identity | Buyer relevance |
|---|---|---|
| 116660 | Original commercial Deepsea generation | Established the 44 mm Ringlock platform; black and later D-Blue dials. |
| 126660 | Second 44 mm generation | Updated movement and bracelet proportions. |
| 136660 | Current steel generation | Further case and dial-detail evolution with calibre 3235. |
| 136668LB | Current yellow-gold Deepsea | First full-gold branch of the collection. |
| 126067 | Deepsea Challenge | 50 mm RLX titanium and extreme depth capability. |
Condition and fit checklist
- Confirm the exact reference; 116660, 126660 and 136660 can look similar in photographs.
- Inspect ceramic bezel edges and case sides for impacts.
- Check the helium-valve area and caseback.
- Confirm full bracelet links, Glidelock function and clasp condition.
- Test winding, date, bezel action and timekeeping.
- Ask for current pressure-test information before any actual diving use.
- On D-Blue examples, verify the correct factory dial for the reference.
- Try the watch on a properly sized bracelet before deciding it is comfortable.
Deepsea FAQs
Is D-Blue better than black?
No. D-Blue is more distinctive and often more sought after; black is more restrained. Buy by preference, condition and price.
Is Deepsea larger than Sea-Dweller?
Yes. Standard Deepsea is 44 mm and considerably thicker, with 3,900 m water resistance versus the 43 mm Sea-Dweller’s 1,220 m.
Can Deepsea be a daily watch?
For the right wrist, yes. Its height and mass make bracelet sizing and comfort essential.
Why is Deepsea Challenge titanium?
RLX titanium helps control weight despite the 50 mm case and extreme pressure-resistant construction.
Does Deepsea Challenge have a date?
No. It uses calibre 3230 and a time-only display, unlike standard Deepsea with calibre 3235 and date.
Can Superlative Watch Co. source a particular Deepsea?
Yes. Buyers may specify reference, dial, material, year, condition, card date and complete-set requirements.
Research and disclosure: Current specifications were checked against official Rolex Deepsea and Deepsea Challenge information. Historical, condition and market guidance reflects Superlative Watch Co. Buying Desk observation and should be verified for the individual watch. Superlative Watch Co. is independent and not affiliated with or authorized by Rolex S.A.