Seiko Cal. 6641 - 137

The 6641-137 is a sought-after Kinetic piece from Seiko's golden era. It features a Cream dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-336a786ac693]

Also known as: Helmet, Rally

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

39mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Cream

Jewels

26j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1979

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