Seiko Cal. 6316 - 740

This Spring Drive model from 1989 features a 42mm PVD Black case. Powered by the 6316 caliber with 17j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-b2803d28a575]

Also known as: Helmet, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

17j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1989

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