Seiko Cal. 0788 - 820

The Seiko 0788-820 represents an important milestone in Seiko's 1966 lineup. With its 20mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-812a1b57c531]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1966

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