Seiko Cal. 0770 - 427

The 0770-427 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0770 caliber with 30j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-a13ad72fc8c9]

Also known as: Sea Horse, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1990

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