Seiko Cal. 0748 - 637

The 0748-637 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Silver dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-026df9ea0428]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1988

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