🏷️ Basic Information Identification Make: Casio Model: DB-2000DG/2100D/2100DSG MRG-100 Year: Not Specified (Repair Manual) Generation: Not Applicable (Accessory) 📋 Manual Details Document Info Manual Type: Service Manual / Repair Manual Language: English Page Count: Multiple Pages (Detailed, 'whole bunch of info-packed pages') Format: PDF Download Availability: Downloadable Content Scope: Rebuilding, Maintaining, Technical Repair Information ⚙️ Engine Specifications Power Plant Engine Type: Quartz Movement (Electronic) Displacement: Not Applicable (Watch Component) Power: Battery Powered 🔧 Transmission Gearbox Type: Mechanical Gears (for timekeeping) Gears: Multiple (for movement and functions) 📐 Dimensions Physical Length: Varies by specific model (MRG-100 series typically around 40-45mm case diameter) Width: Varies by specific model (MRG-100 series typically around 40-45mm case diameter) Height: Varies by specific model (MRG-100 series typically around 10-15mm case thickness) Weight: Varies by specific model (MRG-100 series often features titanium, ~100-150g) 🔧 Maintenance Service Service Interval: Battery Replacement (typically 2-3 years), Periodic Servicing Oil Capacity: Not Applicable (Watch Component) 📄 Features Functions Timekeeping Accuracy: High Precision Quartz Water Resistance: Varies by specific model (e.g., 100M, 200M) Case Material: Varies (e.g., Stainless Steel, Titanium for MRG series) Crystal Material: Mineral Glass, Sapphire Crystal (depending on model) Band Material: Metal Bracelet (Stainless Steel, Titanium) Additional Functions: Chronograph, Alarm, Date, Day, World Time, Backlight (model dependent) 📄 Parts List Component Identification Parts Catalog Included: Yes Component Level Detail: High