The New Trafalgar features a patented bezel control feature which is used to both wind the mainspring of the automatic movement and more critically the bezel is used to set both time and date with ease.Using the outer structure of the case as part of the adjustment mechanism harkens back to submarine clocks and timers that had to be opened to be adjusted. SPECIFICATIONS COLLECTION: Trafalgar TitaniumMODEL : BL-3135-03MOVEMENT : Japan Automatic 3 Hands with DateCASE MATERIAL : TitaniumCASE DIAMETER (mm) : 47CASE THICKNESS (mm) : 14.5CASE SHAPE : RoundLENS: SapphireCASE COLOR : Ionic Plating - CopperDIAL COLOR : Grey with BrownBAND : Genuine Leather StrapBAND COLOR : Dark Brown with Black EdgeBUCKLE : Strap Buckle BAND WIDTH (mm) : 22-22 WATER RESISTANCE : 10 ATM WATCH WEIGHT (g) : 150 WARRANTY : 2 Years International