Seiko Cal. 6637 - 640

Seiko 6637-640

This Solar model from 1999 features a 46mm Gold-Plated case. Powered by the 6637 caliber with 34j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-92420b0f8d8f]

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
46mm
Case Thickness
12.0mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Cream
Jewels
34j
Frequency
21,600 bph
Power Reserve
48 hours
Year
1999

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