Seiko Cal. 4437 - 623

Released in 1978, the Cal. 4437 with design code 623 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-aa556bec6f4b]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Champagne

Jewels

30j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1978

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