Seiko Cal. 3837 - 641

Released in 1983, the Cal. 3837 with design code 641 was part of Seiko's domestic market collection. Powered by the 3837 caliber with 19j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-1b3c05935436]

Also known as: Helmet, Emperor

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1983

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