The CASIO EFK-100D-2A combines classic mechanical watchmaking with modern stainless steel styling. Designed for everyday refinement, this automatic timepiece features both automatic and manual winding capability, a sapphire crystal for enhanced durability, and a transparent screw lock case back that reveals the movement within. Built with magnetic resistance and dependable performance, it delivers timeless elegance with practical functionality. SKU: EFK-100D-2A Basic Information Case Size (L × W × H) 43.5 × 39 × 12.5 mm Weight 148 g Case & Bezel Material Stainless Steel Band Stainless Steel BandSolid Band, One-touch 3-fold Clasp Construction Magnetic Resistant Water Resistance 100-meter water resistance Movement Type Automatic with manual winding Glass Sapphire Crystal Case Back See-through screw lock back Compatible Band Size 150 to 205 mm Movement & Features Power Reserve Approximately 40 hours Accuracy Mean daily rate: -35 to +45 seconds Jewels 24 Jewels Beat Rate 21,600 vibrations per hour Functions Date display, Hacking function (seconds hand)
