Seiko Cal. 6691 - 810

The 6691-810 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6691 caliber with 30j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-2ad9dcabe3ed]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

14.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Cream

Jewels

30j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1982

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