Seiko Cal. 3817 - 623

The 3817-623 is a sought-after Solar piece from Seiko's golden era. Powered by the 3817 caliber with 25j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-d674881b4871]

Also known as: Samurai, Monster

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1971

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