Seiko Cal. 0766 - 257

The Seiko 0766-257 represents an important milestone in Seiko's 1966 lineup. It features a Navy dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-0feec451844a]

Also known as: Sumo, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1966

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