Seiko Cal. 4515 - 691

The 4515-691 is a sought-after Solar piece from Seiko's golden era. Powered by the 4515 caliber with 29j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-d26d82e891b4]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1966

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