Seiko Cal. 6646 - 238

The 6646-238 is a sought-after Automatic piece from Seiko's golden era. It features a Navy dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-d22dc94ed77d]

Also known as: Helmet, Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1978

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