Seiko Cal. 6642 - 937

The 6642-937 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6642 caliber with 36j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-767ec57ad8e4]

Also known as: Rally

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1984

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