Seiko Cal. 7040 - 312

The 7040-312 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-5979fb61ff6f]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Burgundy

Jewels

24j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1989

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