Seiko Cal. 3870 - 305

The Seiko 3870-305 represents an important milestone in Seiko's 1992 lineup. Powered by the 3870 caliber with 28j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-3a2e127ccb30]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

28j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1992

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