Seiko Cal. 5637 - 384

This Spring Drive model from 1998 features a 45mm Hardlex-Coated Steel case. Powered by the 5637 caliber with 31j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-04867d28a3dd]

Also known as: Pogue, UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1998

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