Seiko Cal. 6649 - 231

The 6649-231 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6649 caliber with 34j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-864a1f7ed66c]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1974

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