Seiko Cal. 4451 - 657

The Seiko 4451-657 represents an important milestone in Seiko's 1975 lineup. It features a Green dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-4ccb87f77329]

Also known as: Bellmatic, Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1975

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