Seiko Cal. 5648 - 520

The 5648-520 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5648 caliber with 29j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-97a0ecdf60ad]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Champagne

Jewels

29j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1976

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