Crafted for true sports car enthusiasts and GT car fans the EFK-100D2AER, a sleek three-hand analog watch, embodies the EDIFICE spirit of synergy between timepiece engineering and the world of high performance cars. Electroforming reproduces the look of forged carbon on the dial for a uniquely textured, sporty, yet refined look. The sapphire crystal enhances visibility, while dynamic touches like raised indexes and sharp bezel and case complete the sophisticated design. The see through case back reveals the movement in motion, reinforcing the unique charms of a mechanical watch. Basic InformationCase size : 43.5 × 39 × 12.5 mmWeight : 148 gCase and bezel material : Stainless steelBand : Stainless Steel Band, Solid Band, One-touch 3-fold ClaspConstruction : Magnetic ResistantWater resistance : 100-metre water resistanceMovement type : Winding mechanism: Automatic with manual winding ExteriorGlass : Sapphire CrystalBack plate : See-through screw lock backCompatible band size : 150 to 205 mm Watch FeaturesRun time : Power reserve: Approximately 40 hoursAccuracy : Mean daily rate: -35 to +45 secondsOther featuresDate displayHacking function (seconds hand)Number of jewels: 24Vibrator 21,600 vibrations per hour