B.R.M The New Collection  FF39-40 LIGHT BRONZE  Technical description  Case  Case machined from the block Dimensions: 39x40mm  Shape: isosceles trapezoid with rounded corners  Material: titanium and white ceramic  Lugs: bronze  Crown: brushed stainless steel, bronze laquer  Front and back (bezel and back): sapphire crystal, resin- decorated and UV-hardened Specific screws: stainless- steel micro-threaded BTR screws.  Bezel and back: bronze  Dial  Skeleton dial  Belt bronze laquer, hand black superlight, bronze laquer  Movement  Movement automatic  Swiss base B.R.M-Precitime automatic floating movement Round automatic caliber 28,800 alternations per hour 25 jewels  Strut bar: microfine carbon Rotor: Fortal HR glass beaded diamond cut and hard-anodized; screwed-in and threadlocked bronze counterweight  Ratchet: bored, equilibrated, and decorative, offering a view- from-above of the movement Balance: machined and anodised Fortal HR, dynamic equilibration in the 6 positions, for perfect chronometry  Barrel: bored and equilibrated, with constant and secure motion control  Second-hand stop  Power reserve: about 38 hours Water resistance: 30 meters  Strap  Material: black Alcantara with or without Velcro, alligator skin or leather Stitching: double-stitched by hand  Buckle: B.R.M half-buckle in stainless steel machined from the block  3-year warrantee Weight: 54 grams