Brand Richard Mille Model RM 07-01 Automatic Movement Automatic Caliber CRMA2, In-house Power reserve 50 hours DIAL Dial color Black Dial finish Skeletonized CASE Case size 31.40 X 45.66mm Case material Carbon Case back Closed STRAP Strap material 18K Gold 5N, Carbon, Two-Tone Buckle type Folding Clasp