Seiko Cal. 0770 - 561

The Seiko 0770-561 represents an important milestone in Seiko's 1970 lineup. It features a Silver dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-1f27cac81cda]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1970

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