Seiko Cal. 4451 - 230

Released in 1969, the Cal. 4451 with design code 230 was part of Seiko's domestic market collection. It features a Black dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-66fead56ba2a]

Also known as: Helmet, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1969

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