Seiko Cal. 7099 - 691

The 7099-691 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-b726f79cde23]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1978

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