Seiko Cal. 4538 - 615

The Seiko 4538-615 represents an important milestone in Seiko's 1967 lineup. Powered by the 4538 caliber with 22j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-cd58be12d5f0]

Also known as: Helmet, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Champagne

Jewels

22j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1967

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