Seiko Cal. 6144 - 643

The 6144-643 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6144 caliber with 34j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-d7939b9b139e]

Also known as: Sumo, Helmet

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Silver

Jewels

34j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1967

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