Seiko Cal. 5677 - 770

The 5677-770 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5677 caliber with 23j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-3dcc8f98297d]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

23j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1968

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