Seiko Cal. 5635 - 728

Seiko 5635-728

The 5635-728 is a sought-after Solar piece from Seiko's golden era. Powered by the 5635 caliber with 30j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-fc577acfe88a]

Also known as: Monster, Baby Tuna

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
12.3mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
60m
Dial Color
Champagne
Jewels
30j
Frequency
21,600 bph
Power Reserve
46 hours
Year
1984

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