Seiko Cal. 6647 - 558

The 6647-558 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-a5ceb7cbbc2a]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1982

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