Seiko Cal. 4416 - 438

This Spring Drive model from 1977 features a 36mm Two-Tone case. Powered by the 4416 caliber with 18j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-39266eda51e6]

Also known as: Sumo, Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1977

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