Seiko Cal. 5646 - 770

This Automatic model from 1981 features a 44mm Two-Tone case. It features a Champagne dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-5fd87163bec7]

Also known as: Sumo, Silverwave

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Champagne

Jewels

34j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1981

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