Introduction
The Richard Mille RM 27-05 is the lightest tourbillon watch the brand has ever produced. It weighs just 11.5 grams for the movement and 40 grams for the entire watch including the strap. That number is not a marketing point. It is the result of years of engineering work between Richard Mille and Rafael Nadal to build a tourbillon that could survive a full tennis match. The RM 27-05 is part of the RM 027 line, the same family that started with the RM 027 tourbillon in 2010. In this guide, we break down the RM 27-05 from every angle: specs, the flying tourbillon, the carbon TPT case, the strap, and how to choose the best RM 27-05 replica. If you want a broader look at the Nadal collection, start with the RM 35-01 guide and the RM 67-02 guide.
What Is the RM 27-05?
The RM 27-05 is a flying tourbillon watch designed for competitive sport. A flying tourbillon is a tourbillon where the rotating cage is supported from below rather than by a full bridge. This makes the tourbillon more visible and, on the RM 27-05, allows it to be built into a lighter and flatter movement. The flying tourbillon on the RM 27-05 is not just there for show. It is tuned to handle the shock and acceleration forces that come from a tennis swing. Richard Mille tested the watch with Rafael Nadal during matches, and the movement was refined over multiple iterations to keep accurate time during play. The result is a watch that combines a high-complication tourbillon with genuine sports capability.
RM 27-05 Specifications
The specs explain why the RM 27-05 exists. Here is the core spec sheet pulled from the manufacture published details.
| Specification | Detail |
|---|---|
| Case dimensions | 47.25 mm x 39.70 mm x 12.60 mm |
| Case material | Carbon TPT with NTPT carbon |
| Movement | Flying tourbillon, manual winding |
| Power reserve | ~50 hours |
| Frequency | 21,600 vph (3 Hz) |
| Jewels | 19 |
| Water resistance | 30 metres (3 ATM) |
| Crystal | Sapphire with anti-reflective coating |
| Strap | Textile or rubber, model dependent |
| Total weight | ~40 grams including strap |
| Movement weight | ~11.5 grams |
The 11.5-gram movement weight is the headline figure. A standard tourbillon movement weighs 30 to 50 grams. The RM 27-05 reduces that to 11.5 grams by removing material from the baseplate and bridges, using grade 5 titanium for the structure, and designing the flying tourbillon cage to be as light as possible. The case is the same approach. Carbon TPT and NTPT carbon give the case the strength of steel at a fraction of the weight. The 47.25 mm width is larger than the RM 67-02, but the 12.60 mm thickness keeps it flat on the wrist.
The Flying Tourbillon
A tourbillon is a rotating cage that holds the balance wheel and escapement. Its purpose is to average out the effect of gravity on the movement, which improves accuracy. Most tourbillons are supported by a bridge above the cage. A flying tourbillon removes that bridge and supports the cage from below. This makes the tourbillon more visible through the dial and allows the movement to be built thinner. On the RM 27-05, the flying tourbillon sits at the bottom of the dial and rotates once per minute. Because the cage is not supported from above, the watch has fewer parts and less weight. That is one reason the RM 27-05 movement weighs only 11.5 grams. If you want to understand skeleton watches and tourbillons in more detail, our super clone guide explains the movement architecture behind these complications.
RM 27-05 Variants
The RM 27-05 was produced in a small number of variants, all tied to Rafael Nadal. The main versions include the following.
- RM 27-05 Rafael Nadal Standard: Carbon TPT case with a textile strap and skeleton dial.
- RM 27-05 Flying Tourbillon Ultra-Light: A lighter version with additional material removed from the case and movement.
- RM 27-05 Black Carbon: A dark carbon version with black strap.
- RM 27-05 Premium Carbon: A higher-finish version with refined case edges and strap.
Because these variants use different case materials and strap colours, the finish shifts slightly between models. The core architecture, the flying tourbillon, and the 11.5-gram movement stay the same. When comparing replicas, check that the case material pattern and strap colour match the variant you are buying. You can see current RM 27-05 variants and case options in the RM 027 collection.
RM 27-05 vs RM 27-03
The RM 27-03 is the predecessor to the RM 27-05 and is best known for its dragon flying tourbillon design. Both watches are flying tourbillons in the RM 027 line, but they target different buyers. The RM 27-03 is more dramatic, with a dragon motif and bold colour accents. The RM 27-05 is more technical, with a focus on weight reduction and on-court performance. If you want a statement piece, the RM 27-03 is the pick. If you want the most technically advanced Nadal tourbillon, the RM 27-05 is the better fit.
| Feature | RM 27-03 | RM 27-05 |
|---|---|---|
| Focus | Dragon design, bold colour | Lightness, on-court performance |
| Case | Carbon TPT | Carbon TPT and NTPT carbon |
| Movement weight | ~20 g | ~11.5 g |
| Total weight | ~50 g | ~40 g |
| Design | Sculptural, dragon motif | Technical, skeleton focus |
RM 27-05 Replica vs Original
A genuine RM 27-05 trades above $700,000 on the secondary market. Production was limited, and the watch is one of the most technically complex Richard Mille models ever made. A high-quality RM 27-05 replica should match the original in several visible ways: case proportions, carbon TPT layered pattern, flying tourbillon layout, and strap type. The original movement is a manufacture flying tourbillon with hand-finished titanium bridges. Replicas typically use a Swiss or Japanese tourbillon movement adapted to fit the skeleton layout. For a broader comparison of replicas and genuine watches, read our Fake Richard Mille vs Real guide.
How to Choose an RM 27-05 Replica
Four things matter most when buying an RM 27-05 replica: the tourbillon movement, the case material, the dial depth, and the strap. Here is how to think about each.
Tourbillon Movement
The tourbillon is the defining feature of the RM 27-05. On a genuine watch, it is a real flying tourbillon with a visible rotating cage. On a replica, look for a tourbillon that actually rotates. Some low-grade replicas use a decorative cage that does not rotate. Check the movement specification on the listing. A real tourbillon replica uses a Swiss or Japanese tourbillon movement with a visible cage. This is the single most important feature to verify.
Case Material
The RM 27-05 uses Carbon TPT and NTPT carbon. Both materials have a distinctive layered appearance that is visible at the edges of the case. A high-quality replica reproduces that layered look. A painted case looks flat. When buying, look for a listing that specifies Carbon TPT or NTPT carbon and check close-up photos of the case edge. The layered pattern is the easiest way to tell a real carbon case from a painted one.
Dial Depth
The skeleton dial on the RM 27-05 shows the flying tourbillon and the gear train. On a genuine watch, the dial has real depth and light passes through the movement. On a replica, look for a skeletonised dial with visible gear train elements. A printed pattern looks flat and has no depth. High-quality RM 27-05 replicas use a skeletonised dial with applied details and a visible tourbillon cage.
Strap
The RM 27-05 uses either a textile strap or a rubber strap depending on the variant. Check that the strap colour and material match the variant you are buying. A black carbon RM 27-05 should have a black strap. A standard version typically uses a textile strap in the colour of the case accents. Our guide to understanding case sizes explains how strap width interacts with case dimensions.
Popular RM 27-05 Replica Models
Here are some of the most popular RM 27-05 replicas in our catalog.
- RM 27-05 Rafael Nadal Ultra-Thin Skeleton: a lightweight version with a real flying tourbillon and carbon case.
- RM 27-05 Flying Tourbillon Carbon Fiber: a carbon fiber case with a Swiss tourbillon movement.
- RM 27-05 Ultra-Lightweight Flying Tourbillon: the lightest version with additional material removed.
- RM 27-05 Premium Carbon Case: a higher-finish version with refined case edges.
- RM 27-05 Flying Ultra-Thin: a flat version with a skeleton dial and textile strap.
You can browse the full range in the RM 027 collection and compare specific models on the RM 27-05 Ultra-Thin page and the RM 27-05 Flying Tourbillon Carbon Fiber page.
Conclusion
The RM 27-05 Rafael Nadal is one of the most technically advanced watches Richard Mille has ever made. It combines a flying tourbillon with an 11.5-gram movement and a carbon TPT case that weighs almost nothing. If you are buying a replica, focus on the tourbillon movement, the case material pattern, and the dial depth. Those three things separate a high-quality RM 27-05 super clone from a basic copy. Browse the full range in the RM 027 collection or compare the RM 27-05 Ultra-Lightweight and the RM 27-05 Flying Tourbillon Carbon TPT.
Compare RM 27-05 replicas in every variant and case material.Shop RM 027 Collection
