Seiko Cal. 6640 - 716

This Automatic model from 1994 features a 34mm Stainless Steel case. Powered by the 6640 caliber with 25j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-1484291020ce]

Also known as: Helmet, Crown

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1994

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