Seiko Cal. 3870 - 102

This Automatic model from 1989 features a 40mm Stainless Steel case. Powered by the 3870 caliber with 35j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-2e88e3c3aca1]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

35j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1989

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