Seiko Cal. 3870 - 661

This Solar model from 1977 features a 46mm Hardlex-Coated Steel case. Powered by the 3870 caliber with 28j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-3766f609320d]

Also known as: Panda, Crown

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1977

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