Seiko Cal. 4415 - 105

The 4415-105 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4415 caliber with 30j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-a78f9e1c30cd]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

30j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1968

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