Seiko Cal. 6237 - 644

The Seiko 6237-644 represents an important milestone in Seiko's 1968 lineup. It features a Green dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-7eaa998e5cd2]

Also known as: Navigator

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1968

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