Seiko Cal. 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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