Seiko Cal. 4435 - 527

Seiko 4435-527

The Seiko 4435-527 represents an important milestone in Seiko's 1970 lineup. Powered by the 4435 caliber with 22j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-68c529b24cf2]

Also known as: Sumo, Bellmatic

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
15.6mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
190m
Dial Color
Blue Sunburst
Jewels
22j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1970

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