Seiko Cal. 4487 - 906

Seiko 4487-906

The 4487-906 is a sought-after Solar piece from Seiko's golden era. Powered by the 4487 caliber with 29j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-efeabb6eeaa6]

Also known as: Monster

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
11.2mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
160m
Dial Color
Navy
Jewels
29j
Frequency
21,600 bph
Power Reserve
56 hours
Year
1986

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