Seiko Cal. 6641 - 439

Released in 1971, the Cal. 6641 with design code 439 was part of Seiko's domestic market collection. It features a Navy dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-ac4ff1041ca9]

Also known as: Helmet, Goldfeather

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1971

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