Breitling Avenger Hurricane Watch - 50mm Breitlight Case - Volcano Black Dial - Anthracite Yellow Military Rubber Strap - XB1210E4/BE89/257S/X20D.450. 00 mm Breitlight case made from a lightweight high tech polymer thats been charged with composite fibers for strength and rigidity, screw locked crown, unidirectional ratcheted bezel, cambered sapphire crystal with glareproof treatment on both sides, Volcano black dial, selfwinding high frequency Breitling B12 movement with date display, chronograph function, 70 hours of power reserve, anthracite yellow military rubber strap with folding buckle.