Seiko Cal. 6639 - 435

Seiko 6639-435

This Solar model from 1981 features a 45mm Two-Tone case. Powered by the 6639 caliber with 22j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-0715bdaeff99]

Also known as: Turtle, Bellmatic

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
45mm
Case Thickness
12.4mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
160m
Dial Color
White
Jewels
22j
Frequency
36,000 bph
Power Reserve
54 hours
Year
1981

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