Seiko Cal. 0721 - 641

The 0721-641 is a sought-after Automatic piece from Seiko's golden era. Powered by the 0721 caliber with 18j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-35cb5c8f7a83]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1991

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