Seiko Cal. 3840 - 170

Released in 1985, the Cal. 3840 with design code 170 was part of Seiko's domestic market collection. Powered by the 3840 caliber with 21j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-fc8a52efad96]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1985

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