Seiko Cal. 5639 - 105

The 5639-105 is a sought-after Solar piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-856e2904f44d]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1983

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