🏷️ Basic Information Identification Make: Casio Model: QW-2320/2321 Year: 1999 Generation: N/A 📋 Manual Details Documentation Manual Type: Service Manual + Parts List Language: English Page Count: N/A Format: PDF Download Scope Repair Focus: Maintenance, Servicing, Repairing Target Audience: Watch Owners, Technicians ⚙️ Engine Specifications Powertrain Engine Type: Quartz Movement Displacement: N/A Power: N/A 🔧 Transmission Powertrain Type: N/A Gears: N/A 📐 Dimensions Physical Length: N/A Width: N/A Height: N/A Weight: N/A 🔧 Maintenance Servicing Service Interval: Battery Replacement as needed Oil Capacity: N/A 📄 Features Functionality Timekeeping: Analog/Digital Water Resistance: N/A Alarm: N/A Stopwatch: N/A Backlight: N/A Module Number: N/A