Richard Mille
 For Men
 RM 052 Skull Edition
 7AA Premium Quality
Skull Diamond Edition
 Features: Powered by original Japanese self-winding automatic machinery, Matt finished tonneau-shaped Stainless Steel case with patent screws on top, Sapphire crystal glass on a transparent Skull dial & Diamond  Studded on Dial & Case with open case back, fastened by a high grade black silicone strap with original buckle.
 49.9×42.7MM Case size.
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| Device | White | Black | Red | Green | 
|---|---|---|---|---|
| Chair | 14-14.5 | 15-15.5 | 16-16.5 | 17-17.5 | 
| Moniter | 14-14.5 | 15-15.5 | 16-16.5 | 17-17.5 | 
| Keycaps | 14-14.5 | 15-15.5 | 16-16.5 | 17-17.5 | 
| CPU | 14-14.5 | 15-15.5 | 16-16.5 | 17-17.5 | 
| Mouse | 14-14.5 | 15-15.5 | 16-16.5 | 17-17.5 | 
A chronograph is a watch that can measure elapsed time. It typically has three sub-dials that can be used to measure seconds, minutes, and hours.