Seiko Cal. 6315 - 957

The Seiko 6315-957 represents an important milestone in Seiko's 1971 lineup. Powered by the 6315 caliber with 20j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-3871c148ae62]

Also known as: Monster, Helmet

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Champagne

Jewels

20j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1971

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