Seiko Cal. 4415 - 634

The 4415-634 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4415 caliber with 26j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-6b88ddbcd0e9]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1977

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