Seiko Cal. 6644 - 341

The Seiko 6644-341 represents an important milestone in Seiko's 1987 lineup. Powered by the 6644 caliber with 17j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-bd3a2ca067ed]

Also known as: Helmet, Silverwave

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1987

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