Seiko Cal. 3870 - 316

Released in 1973, the Cal. 3870 with design code 316 was part of Seiko's domestic market collection. Powered by the 3870 caliber with 21j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-24c6ddb6db98]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1973

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