Seiko Cal. 6641 - 397

The Seiko 6641-397 represents an important milestone in Seiko's 1987 lineup. Powered by the 6641 caliber with 24j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-75453263bf16]

Also known as: World Timer, Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

White

Jewels

24j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1987

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