The Casio EFK-100D is a stylish three-hand analog watch designed for sports car and GT fans, blending precision engineering with a sporty look. Its dial features a forged carbon texture, and a sapphire crystal ensures clear visibility, complemented by raised indexes and a sharp bezel. Powered by a mechanical movement with a 40-hour reserve, it comes in a compact 39mm case with a see-through back to view the movement, and it’s water-resistant up to 10 bar for everyday use.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