Seiko Cal. 0777 - 639

This Quartz model from 1977 features a 35mm Two-Tone case. Powered by the 0777 caliber with 27j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-e314f730a419]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1977

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