Seiko Cal. 4540 - 986

The Seiko 4540-986 represents an important milestone in Seiko's 1991 lineup. Powered by the 4540 caliber with 26j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-5eb29bfbb46c]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1991

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