Seiko Cal. 4428 - 739

Seiko 4428-739

The Seiko 4428-739 represents an important milestone in Seiko's 1965 lineup. Powered by the 4428 caliber with 26j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-87e8104da21c]

Also known as: Monster, Golden Tuna

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
10.0mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
Champagne
Jewels
26j
Frequency
21,600 bph
Power Reserve
42 hours
Year
1965

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