Seiko Cal. 6691 - 907

This Hand-Winding model from 1991 features a 34mm Two-Tone case. Powered by the 6691 caliber with 24j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-c5f81fd1be5c]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1991

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