Seiko Cal. 6687 - 497

The Seiko 6687-497 represents an important milestone in Seiko's 1985 lineup. Powered by the 6687 caliber with 19j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-94ddfe825e69]

Also known as: Tuna, Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1985

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