Seiko Cal. 4540 - 295

This Spring Drive model from 1977 features a 43mm Stainless Steel case. Powered by the 4540 caliber with 18j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-0b3283fbbbe3]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Cream

Jewels

18j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1977

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