Seiko Cal. 6645 - 437

Seiko 6645-437

The 6645-437 is a sought-after Solar piece from Seiko's golden era. Powered by the 6645 caliber with 31j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-f54a2c71c940]

Also known as: Samurai, Flighty

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
35mm
Case Thickness
14.3mm
Lug Width
22mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Black
Jewels
31j
Frequency
36,000 bph
Power Reserve
52 hours
Year
1975

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