Seiko Cal. 6138 - 666

The 6138-666 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6138 caliber with 26j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-18faec230025]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1977

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