Seiko Cal. 7135 - 144

The Seiko 7135-144 represents an important milestone in Seiko's 1968 lineup. Powered by the 7135 caliber with 31j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-909c8ba65c04]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1968

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