Seiko Cal. 6643 - 161

The Seiko 6643-161 represents an important milestone in Seiko's 1997 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-f4ff390e3321]

Also known as: Tuna, Bullhead

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

45mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1997

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