Seiko Cal. 5661 - 976

This Spring Drive model from 1973 features a 43mm Two-Tone case. It features a Silver dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-203c96ad978e]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1973

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