Seiko Cal. 0728 - 550

Seiko 0728-550

The 0728-550 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 0728 caliber with 30j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-e46ffb53c99c]

Also known as: Golden Tuna

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
12.3mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Green
Jewels
30j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1966

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