Seiko Cal. 3899 - 620

The 3899-620 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3899 caliber with 21j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-8435cfa98b27]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1970

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