Seiko Cal. 5638 - 445

The 5638-445 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5638 caliber with 30j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-9c03259f9f76]

Also known as: Monster, Rally

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1984

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