Seiko Cal. 6637 - 458

This Hand-Winding model from 1973 features a 41mm Stainless Steel case. It features a Navy dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-33261e1e8b22]

Also known as: Panda

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1973

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