Seiko Cal. 5649 - 812

The 5649-812 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5649 caliber with 19j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-4d5530d78d45]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1974

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