Finished in a white rubber strap, this replica rm-21-01 white skeleton presents one of the more striking color combinations in the Aerodyne family. The RM 21-01 Tourbillon Aerodyne is a study in structural engineering applied to horology, using an NTPT carbon fiber case that keeps total weight far below expectations for a watch measuring approximately 50mm in length. The skeleton dial exposes the tourbillon at six o’clock, framed by a lattice of bridges. Against the white strap, the dark carbon case creates a contrast that shifts the personality toward a lighter, warmer aesthetic. Richard Mille conceived the Aerodyne series as an exercise in weight reduction.

Case & Movement Specs

• Case material: NTPT carbon fiber
• Case dimensions: approximately 50mm x 40mm tonneau
• Dial: skeleton with exposed tourbillon at 6 o’clock
• Crystal: sapphire, front and back
• Strap: white rubber with titanium buckle
• Movement: manual-wind tourbillon
• Functions: hours, minutes, tourbillon

NTPT carbon is produced by layering thin sheets of carbon fiber at controlled angles, then curing under heat and pressure. Each case shows a unique wave pattern in the material grain.

Caliber Breakdown

The tourbillon carriage rotates once per minute, compensating for positional errors in timekeeping. Manual winding provides an approximate 70-hour power reserve, generous for a tourbillon of this complexity. The bridges are finished in a dark grey tone behind the exposed gear train. For those evaluating other color options, the black strap version offers a more stealthy look that blends with the NTPT case. Both sit within the RM 21-01 collection and share identical mechanical architecture.

How It Compares

White straps on dark-cased watches tend to draw the eye to the wrist more quickly than monochromatic combinations. The Aerodyne was conceived as a lightweight tourbillon platform, and the white rubber does nothing to compromise that mission since the strap adds minimal mass. The tonneau shape hugs the forearm contour rather than sitting flat on top. This replica rm-21-01 white skeleton is the right entry point for the Aerodyne design language without the understated approach of all-black configurations.