Seiko Cal. 4536 - 136

The Seiko 4536-136 represents an important milestone in Seiko's 1975 lineup. Powered by the 4536 caliber with 19j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-8f5bcfab4f66]

Also known as: Helmet, Bellmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

12.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1975

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