Seiko Cal. 5634 - 161

The 5634-161 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5634 caliber with 28j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-bd549306d98d]

Also known as: Bullhead, Crown

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1981

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