Seiko Cal. 6310 - 931

The Seiko 6310-931 represents an important milestone in Seiko's 1987 lineup. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-df31efe8a9f0]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1987

Related Models

• Seiko 6662-262
• Seiko 7088-388
• Seiko 5645-471
• Seiko 6379-718
• Seiko 5655-461
• Seiko 5698-732
• Seiko 5651-489
• Seiko 0791-627
• Seiko 6357-767
• Seiko 6350-239
• Seiko 7074-400
• Seiko 6366-870