Seiko W358A Parts Catalogue and Technical Guide

Parts catalogue and technical guide for the Seiko W358A digital watch module, providing complete documentation for service technicians and repair professionals. Contains a detailed parts diagram with numbered components including case back screw, case back, gasket, module assembly, case middle, buttons and springs, along with disassembly and reassembly procedure illustrations for efficient maintenance work. Features liquid crystal panel options with multiple variants to match production specifications. The circuit block structure diagram clearly identifies all capacitors, transistors, and converter components for circuit-level troubleshooting. Battery specifications detail both Seiko CR2025 and Matsushita CR2025 options, each rated at 3.0V nominal voltage with approximately 3 years typical service life. Module specifications cover the Nematic Liquid Crystal display with 1/4 multiplex driving system and full operational capabilities including time and calendar display, alarm setting, dual time zone, timer, circuit race timer, memory recall, and navigator function. An essential reference for workshop technicians performing repairs, module replacement, or battery service on this watch model.