Seiko Cal. 4436 - 663

This Spring Drive model from 1994 features a 37mm Titanium case. Powered by the 4436 caliber with 31j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-495ca581edeb]

Also known as: Panda, Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1994

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