Seiko Cal. 5663 - 910

This Spring Drive model from 1993 features a 37mm Titanium case. Powered by the 5663 caliber with 17j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-0087d86eb26f]

Also known as: UFO, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1993

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