Seiko Cal. 0740 - 312

The Seiko 0740-312 represents an important milestone in Seiko's 1983 lineup. Powered by the 0740 caliber with 31j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-601318489b20]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Champagne

Jewels

31j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1983

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