Seiko Cal. 5650 - 310

The 5650-310 is a sought-after Solar piece from Seiko's golden era. Powered by the 5650 caliber with 18j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-877d4a1e52f7]

Also known as: Sumo, Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1966

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