Exceptional Richard Mille RM 39-01 Aviation E6-B Titanium | Flyback
Basic Information
| Specification | Details |
|---|---|
| Brand | Richard Mille |
| Collection | RM 39 |
| Model | RM 39-01 Aviation E6-B |
| Reference Number | RM 39-01 |
| Listing Code | OB20C6 |
| Production Year | Unknown |
| Condition | Used – Very Good |
| Condition Details | Minor Signs of Wear |
| Availability | Available |
| Case Material | Titanium, as Listed |
| Case Shape | Round / Aviation Instrument-Inspired |
| Case Diameter | 50.7mm, as Listed |
| Dial | Aviation Instrument-Style |
| Movement | Automatic |
| Strap Material | Rubber |
| Original Box | Included |
| Original Papers | Included |
| Presentation | Full Set |
Movement and Caliber
| Specification | Details |
|---|---|
| Movement Type | Automatic |
| Caliber | RMAC2, Model-Level |
| Movement Architecture | Skeletonized |
| Chronograph | Flyback |
| Annual Calendar | Model-Level Function |
| Oversized Date | Model-Level Function |
| Month Display | Model-Level Function |
| Navigation Calculator | E6-B Rotating Bezel System |
| Functions | Hours, Minutes, Seconds, Chronograph, Calendar, Aviation Calculations |
Case
| Specification | Details |
|---|---|
| Case Material | Titanium |
| Case Shape | Round |
| Case Diameter | 50.7mm, as listed |
| Bezel | Rotating Aviation Calculation Bezel |
| Bezel Material | Not Specified |
| Crystal | Sapphire |
| Caseback | Not Specified |
| Water Resistance | Not Provided for Individual Watch |
| Case Condition | Used – Very Good |
Dial
| Specification | Details |
|---|---|
| Dial Style | Aviation Instrument-Inspired |
| Dial Color | Not Specified |
| Numerals | No Numerals, as Listed |
| Chronograph Displays | Yes |
| Calendar Displays | Model-Level |
| Movement Visibility | Skeletonized Architecture |
Bracelet / Strap
| Specification | Details |
|---|---|
| Strap Material | Rubber |
| Strap Color | Not Specified |
| Clasp Type | Not Specified |
| Clasp Material | Not Specified |
Functions
-
Hours, minutes, and seconds
-
Automatic winding
-
Flyback chronograph
-
Annual calendar
-
Oversized date
-
Month indicator
-
E6-B aviation navigation calculations
-
Rotating calculation bezel
Included Accessories
| Accessory | Details |
|---|---|
| Original Richard Mille Box | Included |
| Original Richard Mille Papers | Included |
| Rubber Strap | Included |
| Presentation | Full Set |
Richard Mille RM 39-01 Aviation E6-B Titanium
The Richard Mille RM 39-01 Aviation E6-B Titanium is an extraordinary expression of aviation-inspired Swiss watchmaking, combining an intricate automatic flyback chronograph with the specialized calculation capabilities of a mechanical flight computer.
Designed to meet the demands of professional aviation, this sophisticated timepiece incorporates a rotating E6-B slide-rule bezel, UTC dual-time display, countdown timer, oversized date, and advanced automatic movement.
Its grade 5 titanium case, complex instrument-style dial, and technical architecture reflect Richard Mille’s commitment to mechanical innovation.
This particular example is presented in very good pre-owned condition and includes its original Richard Mille box and papers.
The RM 39-01 Aviation Collection
The Richard Mille RM 39-01 Aviation E6-B Titanium belongs to the manufacturer’s highly specialized aviation collection.
Introduced in 2013, the RM 39-01 builds upon the engineering developments of the RM 039 Aviation E6-B tourbillon.
The RM 39-01 translates many of the original model’s specialized aviation functions into an automatic mechanical movement.
Its design draws inspiration from traditional flight-navigation instruments while incorporating advanced contemporary watchmaking techniques.
The result is a distinctive mechanical watch created around the practical calculations and timing requirements of aviation.
Grade 5 Titanium Case Construction
The Richard Mille RM 39-01 Aviation E6-B Titanium features an elaborate case manufactured from grade 5 titanium.
This high-performance alloy is valued for its strength, corrosion resistance, and relatively low weight.
The watch’s large circular case is engineered to accommodate the sophisticated rotating calculation bezel, chronograph pushers, and intricate movement architecture.
Its complex multi-part construction reflects the demanding machining and finishing standards associated with Richard Mille.
The titanium exterior reinforces the model’s technical character while supporting its aviation-inspired design.
E6-B Aviation Slide-Rule Bezel
One of the defining features of the Richard Mille RM 39-01 Aviation E6-B Titanium is its sophisticated E6-B flight-computer bezel.
The system incorporates fixed and bidirectionally rotating scales designed for aviation calculations.
Using the slide-rule mechanism, pilots can calculate fuel consumption, flight time, ground speed, density altitude, and the influence of wind.
The bezel also supports conversions between measurement units commonly used in aviation.
This mechanical calculation system reflects the principles of the traditional E6-B flight computer, providing a distinctive connection between aviation history and contemporary haute horlogerie.
Automatic Caliber RMAC2
At the heart of the Richard Mille RM 39-01 Aviation E6-B Titanium is the automatic caliber RMAC2.
This highly sophisticated movement incorporates approximately 620 components and 62 jewels.
Operating at 28,800 vibrations per hour, it provides approximately 50 hours of power reserve.
Its grade 5 titanium baseplate and bridges are engineered for rigidity and mechanical stability.
The caliber integrates multiple timing and calendar functions while maintaining the technical transparency characteristic of Richard Mille’s skeletonized movement architecture.
Flyback Chronograph for Aviation Timing
The Richard Mille RM 39-01 Aviation E6-B Titanium incorporates a sophisticated flyback chronograph.
The flyback function allows an active chronograph timing sequence to be reset and restarted without first stopping the mechanism.
This functionality is particularly relevant to aviation navigation, where successive timing intervals may need to be measured efficiently.
The central chronograph seconds hand works alongside dedicated counters for elapsed hours and minutes.
The mechanism demonstrates Richard Mille’s approach to integrating advanced mechanical timing functions into a specialized pilot’s watch.
UTC Dual-Time Functionality
The Richard Mille RM 39-01 Aviation E6-B Titanium features a UTC display for tracking a second time zone.
This function is especially useful in aviation, where pilots frequently work with Coordinated Universal Time.
A dedicated hand indicates the additional time zone and can be adjusted through a separate control.
The dual-time display is integrated into the watch’s instrument-inspired dial.
Together with the E6-B calculation bezel, this feature reinforces the RM 39-01’s aviation-focused functionality.
Countdown Timer and Chronograph Counters
The Richard Mille RM 39-01 Aviation E6-B Titanium incorporates a 60-minute countdown mechanism.
Located near 9 o’clock, the countdown display allows the wearer to monitor remaining time alongside elapsed chronograph minutes.
A dedicated chronograph hour counter is positioned near 6 o’clock.
These timing indications are integrated into the movement’s sophisticated display architecture.
The combination of countdown and flyback chronograph functions creates a comprehensive mechanical timing instrument.
Annual Calendar with Oversized Date
The Richard Mille RM 39-01 Aviation E6-B Titanium incorporates an annual calendar mechanism with an oversized date and month display.
The oversized date appears near 12 o’clock, improving legibility.
The month indication is positioned between approximately 4 and 5 o’clock.
The annual calendar automatically accommodates months of different lengths, apart from the transition from February to March.
These calendar functions complement the watch’s extensive aviation and chronograph capabilities.
Variable-Geometry Automatic Rotor
The Richard Mille RM 39-01 Aviation E6-B Titanium features a variable-geometry automatic winding rotor.
This sophisticated mechanism allows the winding characteristics to be adjusted according to the wearer’s activity level.
The rotor incorporates titanium and precious-metal components to optimize its mechanical performance.
Its construction contributes to efficient energy management while supporting the movement’s approximately 50-hour power reserve.
The system reflects Richard Mille’s emphasis on mechanical adaptability and advanced movement engineering.
Innovative Locking Crown and Controls
The Richard Mille RM 39-01 Aviation E6-B Titanium incorporates a specialized locking crown designed to prevent accidental operation.
By rotating the crown’s locking ring, the wearer can secure the chronograph pushers and crown against unintended activation.
Colored indicators identify the locked and unlocked states.
This mechanism is particularly relevant to aviation, where inadvertent activation of timing controls could interfere with calculations.
The innovative system adds another layer of functional engineering to the watch’s complex design.
Rubber Strap and Sapphire Crystal
The Richard Mille RM 39-01 Aviation E6-B Titanium is fitted with a rubber strap, according to the supplied listing.
The flexible material complements the titanium case and contributes to comfortable wrist wear.
A sapphire crystal protects the complex aviation-style dial and its numerous mechanical indications.
The precise strap color, buckle type, and clasp material of this particular example have not been provided and should be confirmed from photographs.
Very Good Pre-Owned Condition with Original Box and Papers
This particular Richard Mille RM 39-01 Aviation E6-B Titanium is presented in very good pre-owned condition.
According to the supplied listing, the watch shows minor signs of wear consistent with previous ownership.
Its production year has not been specified.
The watch is accompanied by its original Richard Mille presentation box and papers.
With its intricate RMAC2 automatic movement, E6-B aviation slide-rule bezel, flyback chronograph, and advanced titanium construction, the RM 39-01 represents a remarkable achievement in specialized mechanical watchmaking.

















