Seiko Cal. 4528 - 428

Seiko 4528-428

The Seiko 4528-428 represents an important milestone in Seiko's 1968 lineup. Powered by the 4528 caliber with 27j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-0e3cd850788e]

Also known as: Baby Tuna

Specifications

Movement
Solar
Case Material
Titanium
Case Width
34mm
Case Thickness
10.9mm
Lug Width
20mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
40m
Dial Color
Navy
Jewels
27j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1968

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