Seiko Cal. 5645 - 388

The 5645-388 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5645 caliber with 25j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-066c6da51fb5]

Also known as: Samurai, World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1980

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