Seiko Cal. 5630 - 161

The Seiko 5630-161 represents an important milestone in Seiko's 1975 lineup. Powered by the 5630 caliber with 25j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-121f5fb7ed4a]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1975

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