Seiko Cal. 4537 - 251

The Seiko 4537-251 represents an important milestone in Seiko's 1968 lineup. Powered by the 4537 caliber with 34j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-6d267f5416fd]

Also known as: Crown, Arnie

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Cream

Jewels

34j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1968

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