🏷️ Basic Information Identification Make: Casio Model: MSG-100 Series, PRL/PRT Series, MW-58 Series Year: 1998 Generation: Not Applicable 📋 Manual Details Documentation Manual Type: Repair Manual Language: English Format: PDF Download Content Focus: Rebuilding and Maintenance Content Detail Level: Detailed Parts List Included: Yes Availability: Downloadable Intended Audience: Technicians and advanced DIY users ⚙️ Engine Specifications Module Engine Type: Quartz Movement Power Source: Battery 🔧 Transmission Module Type: Analog/Digital Display Combination Functions: Timekeeping, Alarm, Stopwatch, Date 📐 Dimensions Case Case Material: Resin Strap Material: Resin/Leather (Model Dependent) 🔧 Maintenance Battery Battery Type: Silver Oxide Button Cell (e.g., SR920SW, SR626SW) Battery Life Estimate: 2-3 Years (model dependent) General Water Resistance: Varies by model (e.g., 50M, 100M) Cleaning Cleaning Instructions: Mild soap and water, soft cloth Storage Storage Recommendations: Dry, cool place, away from direct sunlight