Seiko Cal. 5638 - 277

This Solar model from 1991 features a 39mm Two-Tone case. Powered by the 5638 caliber with 28j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-1b65ba10caa3]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1991

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