for Seiko Capacitor 3023.5MY Capacitor Kinetic 3023-5MZ,

Product Overview

This high-performance capacitor battery is designed specifically for select Seiko Kinetic and Eco-Drive watch models, including the 3023.5MY, 3023-5MZ, and MT920 series. Engineered as a direct replacement for the original TC920S capacitor, it delivers reliable energy storage and consistent power delivery to keep your kinetic watch running accurately. Ideal for watch repair professionals and enthusiasts, this component ensures long-term functionality for compatible Seiko movements such as the 5M22, 5M23, 5M25, 5M42, 5M43, 5M45, and 5M47. With a service life of up to seven years, it provides dependable performance backed by premium materials and precision manufacturing. The capacitor operates using photodynamic energy storage, meaning it recharges through exposure to light—either natural sunlight or artificial sources like desk lamps or flashlights—eliminating the need for traditional battery replacements.

Key Features

• Grade A Premium Quality – Sourced from original imported components, this capacitor meets high manufacturing standards for durability and electrical efficiency, ensuring stable operation over time. Each unit undergoes rigorous quality control to match the performance and reliability of genuine Seiko parts.
• Extended 7-Year Service Life – Built for longevity, the capacitor maintains reliable performance for up to seven years under normal usage conditions, reducing the need for frequent replacements and offering excellent value over time.
• Enhanced Energy Efficiency – Incorporates superconducting graphene technology that improves overall performance by 20%, minimizing energy loss and maximizing charge retention. This innovation ensures your watch remains powered longer between charges and operates with greater precision.
• Ultra-Thin Steel Shell Design – Features a precision-engineered shell measuring less than 0.23mm in thickness, allowing for seamless integration into compact watch mechanisms without compromising structural integrity. This slim profile is critical for fitting within the tight confines of kinetic watch movements.
• Increased Capacity – The upgraded internal design pushes the capacity limit, delivering stronger and more consistent power output to support the precise timekeeping functions of kinetic movements. This results in improved accuracy and reduced risk of power-related time drift.
• Complete Installation Kit – Includes one 3023.5MY capacitor, a protective storage box, two watch cover opening tools, one metal tweezers, and two screwdrivers for convenient and safe handling during replacement. These tools are designed to minimize the risk of damage during disassembly and reassembly.

Technical Specifications

• Model Numbers: 3023.5MY, 3023-5MZ, MT920
• Compatible Seiko Movements: 5M22, 5M23, 5M25, 5M42, 5M43, 5M45, 5M47
• Original Equivalent: TC920S
• Battery Type: Capacitor (rechargeable, photodynamic energy storage)
• Service Life: 7 years
• Shell Thickness: Less than 0.23mm
• Performance Enhancement: 20% improvement via graphene technology
• Charging Method: Light-powered (sunlight or artificial light such as desk lamp or flashlight)
• Full Charge Time: 3–5 hours under adequate light exposure

Benefits & Use Cases

This capacitor is essential for restoring or maintaining the functionality of Seiko Kinetic and Eco-Drive watches that rely on light-charged energy storage. It is particularly suited for users who own compatible 5M-series movements and require a reliable, long-lasting power source that aligns with the original design specifications. The included tools make it practical for both professional watchmakers and DIY repairers to perform safe and accurate installations. Once installed, the capacitor charges efficiently when the watch is exposed to light—either natural sunlight or common indoor lighting—ensuring continuous operation without manual winding or traditional battery replacements. Its extended lifespan and low current loss make it a cost-effective solution for preserving the precision and convenience of kinetic timekeeping. Whether you’re servicing a vintage Seiko Kinetic or maintaining a modern Eco-Drive model, this capacitor supports uninterrupted performance and accurate timekeeping.

Important Notes

Proper installation requires exposure to light after replacement; place the watch under a light source for 3–5 hours to achieve a full charge. Ensure the front glass faces the light during charging for optimal energy absorption. The package includes essential tools for safe handling, but users should exercise care when opening watch cases to avoid damage to internal components. This product is not compatible with non-Seiko models or movements outside the specified 5M series. For any technical questions or support, customer service responds within 12 hours to assist with inquiries. YUFEEI offers friendly and reliable after-sales service—if you have any concerns, feel free to contact us for prompt assistance.