Seiko Cal. 6687 - 179

Released in 1971, the Cal. 6687 with design code 179 was part of Seiko's domestic market collection. It features a Cream dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-fff3c2cf9ea2]

Also known as: Helmet, World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Cream

Jewels

34j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1971

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