Thank you for viewing. This is a rare 1970s electromagnetic balance wheel watch, the Seiko ELNIX SG 0723-6020. This historical model, produced only for a short period just before the widespread adoption of quartz watches, combines a mechanical structure with electronic circuits. You can enjoy its unique sweep hand movement and mechanical action. 【Maintenance Details (Performed February 2026)】 Battery Replacement: The battery has been replaced with a new one, and it is running normally. Waterproofing: The back cover gasket (rubber gasket) has been replaced with a new one. Silicone grease has been applied to enhance water resistance. Exterior Finish: Carefully polished to restore its original shine. Cleaning: Disinfected and cleaned with alcohol. 【Product Condition】 Operation: Currently running normally. Crystal (Glass): Due to its vintage nature, there are fine scratches on the surface. Please check the images for details and consider this as part of the antique aesthetic. Exterior (Case): Polished, with no major damage and in very beautiful condition. Belt: Equipped with a genuine Seiko stainless steel belt. Wrist Size: Approximately 17.5cm (please allow for slight variations due to amateur measurement). 【Detailed Information】 Model Number: 0723-6020 Brand: Seiko (SEIKO) Case Size: Width approximately 37mm (excluding the crown) / Thickness approximately 12mm Lug Width: 18mm 【Reliable Transactions & Other Information】 Authenticity Guarantee: We guarantee that this is a genuine product. If it is found to be a counterfeit or imitation, we will accept returns and provide a refund. Price Negotiation: We are open to price negotiations. Please feel free to comment. Welcome International Buyers: Welcome international buyers through proxies such as Buyee! Thank you. #SEIKO #Seiko #ELNIX #Elnix #0723 #ElectromagneticBalanceWheel #VintageWatch #AntiqueWatch #BatteryReplaced #Maintained #RareModel #GenuineBelt