Seiko Cal. 6647 - 623

The 6647-623 is a sought-after Spring Drive piece from Seiko's golden era. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-56390bd4cc42]

Also known as: Panda

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1966

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