Seiko Elnix 0703-8040 – Electro-Mechanical Vintage (Japan, November 1975)

A rare and technically fascinating Seiko Elnix from the mid-1970s. This model series marked an important intermediate step in the development from the classic mechanical watch to the quartz watch: The electromechanical caliber 0703 combines an electronically controlled balance wheel motor with traditional movement architecture – a true piece of watchmaking history.

Technical data

• Model: Seiko Elnix 0703-8040
• Caliber: 0703A (electromechanical movement with transistor regulation)
• Frequency: 21,600 A/h
• Stones: 12 Jewels
• Power supply: Battery (electrically driven balance wheel)
• Case material: Stainless steel
• Glass: Mineral glass
• Dial: Sunburst finish green-silver with vertical structure, applied gold-colored indices
• Hands: gold-colored with central second hand
• Display: Day of the week (bilingual English/Kanji) and date at 3 o'clock
• Diameter: 36.5 mm
• Lug-to-lug: 40.4 mm
• Lug width: 18 mm
• Height: approx. 11.5 mm
• Weight (including aftermarket steel bracelet): 108 g
• Serial number: 5Nxxxx → November 1975
• Origin: Made in Japan

Condition

Very good condition for an Elnix of this period. The dial displays vibrant green and silver reflections, and the indices and hands are clean. The case shows minor signs of wear, and the crystal is free of deep scratches. The movement is functional with a new battery, and the day/date display works. It comes with a matching aftermarket steel bracelet in very good condition.

Special features

• Historically significant transitional model between mechanical and quartz movements
• Japanese caliber 0703A – electromechanical with transistor control
• Bilingual weekday display (English/Kanji)
• Striking 1970s case with polished facets
• Made in Japan

Warranty (used)
This is a used item. The limitation period for claims based on defects (statutory warranty) is 12 months from delivery.

Notice
As this is a pre-owned watch, water resistance cannot be guaranteed. To protect the movement, the watch should not come into contact with water or moisture.