Seiko Cal. 4527 - 770

Seiko 4527-770

The 4527-770 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4527 caliber with 34j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-b412b3df4b50]

Also known as: Baby Tuna, Arnie

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
9.7mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Cream
Jewels
34j
Frequency
21,600 bph
Power Reserve
44 hours
Year
1969

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