Seiko Cal. 5261 - 355

This Hand-Winding model from 1966 features a 40mm Titanium case. It features a Champagne dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-a31885f6da67]

Also known as: Monster, Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

18j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1966

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