Seiko Cal. 3815 - 637

Seiko 3815-637

This Solar model from 1988 features a 35mm Hardlex-Coated Steel case. Powered by the 3815 caliber with 30j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-4c8c3a16400b]

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
9.4mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
120m
Dial Color
Navy
Jewels
30j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1988

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seikata-wm-4c8c3a16400b