Seiko Cal. 4540 - 198

This Automatic model from 1977 features a 39mm Two-Tone case. Powered by the 4540 caliber with 29j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-b8248a40fc69]

Also known as: Turtle, Sumo

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1977

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