Seiko Cal. 4437 - 254

Released in 1979, the Cal. 4437 with design code 254 was part of Seiko's domestic market collection. It features a Navy dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-8f8df5ea5f1f]

Also known as: Silverwave

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Navy

Jewels

25j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1979

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