Seiko Cal. 6121 - 598

The 6121-598 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6121 caliber with 31j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-842790194777]

Also known as: Helmet, World Timer

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

41mm

Case Thickness

8.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1974

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