Seiko Cal. 6637 - 994

The 6637-994 is a sought-after Solar piece from Seiko's golden era. It features a Green dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-c0914e2d3adf]

Also known as: Panda, Navigator

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1972

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