Seiko Cal. 3870 - 444

The 3870-444 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3870 caliber with 35j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-1fa4c812141f]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

14.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1971

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