Seiko Cal. 0770 - 561

The Seiko 0770-561 represents an important milestone in Seiko's 1981 lineup. Powered by the 0770 caliber with 35j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-d7b2871a0837]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1981

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