Seiko Cal. 7091 - 639

The 7091-639 is a sought-after Solar piece from Seiko's golden era. Powered by the 7091 caliber with 36j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-52e33a39c329]

Also known as: Bullhead, Goldfeather

Specifications

Movement

Solar

Case Material

Titanium

Case Width

46mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1973

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