Seiko Cal. 5656 - 635

The 5656-635 is a sought-after Solar piece from Seiko's golden era. Powered by the 5656 caliber with 31j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-180a9967dc0a]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

8.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1967

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