Seiko Cal. 6637 - 400

Seiko 6637-400

This Solar model from 1983 features a 42mm Hardlex-Coated Steel case. Powered by the 6637 caliber with 35j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-94a938a4ff00]

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
12.1mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Navy
Jewels
35j
Frequency
21,600 bph
Power Reserve
44 hours
Year
1983

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