Seiko Cal. 4438 - 476

The 4438-476 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-e048dc860f54]

Also known as: Sumo, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1965

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