Seiko Cal. 3870 - 320

The 3870-320 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3870 caliber with 26j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-c3efac0f1230]

Also known as: Panda, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1979

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