Seiko Cal. 6310 - 857

This Spring Drive model from 1979 features a 35mm Hardlex-Coated Steel case. Powered by the 6310 caliber with 20j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-5335fbb9cdc1]

Also known as: Panda, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1979

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