Seiko Cal. 5633 - 646

The Seiko 5633-646 represents an important milestone in Seiko's 1983 lineup. Powered by the 5633 caliber with 26j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-41d523ad3dbf]

Also known as: Samurai

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Silver

Jewels

26j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1983

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