Seiko Cal. 4540 - 681

This Spring Drive model from 1977 features a 38mm Two-Tone case. Powered by the 4540 caliber with 19j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-96eb2bec91c9]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1977

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