Seiko Cal. 6690 - 254

The Seiko 6690-254 represents an important milestone in Seiko's 1965 lineup. Powered by the 6690 caliber with 29j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-abd535081d4f]

Also known as: Crown, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1965

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