Seiko Cal. 6685 - 991

The Seiko 6685-991 represents an important milestone in Seiko's 1966 lineup. Powered by the 6685 caliber with 17j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-2122adc5bdc4]

Also known as: Golden Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1966

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