Seiko Cal. 4540 - 620

The Seiko 4540-620 represents an important milestone in Seiko's 1974 lineup. Powered by the 4540 caliber with 35j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-70fbb5bd3225]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Burgundy

Jewels

35j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1974

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