Seiko Cal. 6646 - 691

The 6646-691 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6646 caliber with 35j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-fed2debafca8]

Also known as: Samurai, Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Silver

Jewels

35j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1998

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