Seiko Cal. 6661 - 156

This Hand-Winding model from 1981 features a 36mm Two-Tone case. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-92cdc33d9ae6]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

130m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1981

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