Seiko Cal. 7148 - 634

The Seiko 7148-634 represents an important milestone in Seiko's 1990 lineup. Powered by the 7148 caliber with 31j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-0ad223275ca4]

Also known as: Helmet, Arnie

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1990

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