Seiko Cal. 4427 - 237

Seiko 4427-237

This Solar model from 1985 features a 40mm Hardlex-Coated Steel case. Powered by the 4427 caliber with 36j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-7c9daa9e09d7]

Also known as: Sumo, Baby Tuna

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
9.4mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Cream
Jewels
36j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1985

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