🏷️ Basic Information Identification Make: Casio Model: QW-1645 Year: 1997 Generation: N/A 📋 Manual Details Publication Info Manual Type: Repair Manual and Parts List Language: English Page Count: Unknown Format: PDF Download Content Focus Primary Purpose: DIY Repair and Servicing Target Audience: Watch Enthusiasts, DIY Repairers Scope: Comprehensive Technical Repair Information ⚙️ Engine Specifications Movement Engine Type: Quartz Movement Calibre Number: QW-1645 Power Source Battery Type: Typically Lithium Coin Cell (e.g., CR2016 or similar) 🔧 Transmission Functionality Type: N/A (Analog/Digital Watch Mechanism) Gears: N/A (Mechanical gears within movement) 📐 Dimensions Case Dimensions Case Diameter: Varies (typically 35-45mm for this era) Case Thickness: Varies (typically 8-15mm for this era) Weight Weight: Varies (dependent on case material and strap) 🔧 Maintenance Battery Replacement Service Interval Battery: Typically 2-5 years Cleaning Recommended Cleaning: Gentle wiping with a soft, dry cloth Water Resistance Water Resistance Rating: Varies by specific model variant (e.g., 50M, 100M) 📄 Features Display Display Type: Analog or Digital or Analog-Digital Combination Functions Primary Functions: Timekeeping, Date, Chronograph, Alarm, etc. (specifics vary) Case Material Case Material Options: Stainless Steel, Resin, Plated Base Metal