Seiko Cal. 4538 - 168

The Seiko 4538-168 represents an important milestone in Seiko's 1975 lineup. Powered by the 4538 caliber with 32j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-a3160bf396ac]

Also known as: Sumo, Bellmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

32j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1975

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