Seiko Cal. 6641 - 536

The Seiko 6641-536 represents an important milestone in Seiko's 1991 lineup. It features a Navy dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-586e905c10a6]

Also known as: Shogun, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1991

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