Seiko Cal. 0731 - 280

The Seiko 0731-280 represents an important milestone in Seiko's 1978 lineup. It features a Silver dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-21c3b21084f3]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1978

Related Models

• Seiko 5621-991
• Seiko 6350-539
• Seiko 6156-951
• Seiko 0774-249
• Seiko 0783-666
• Seiko 0797-338
• Seiko 6127-170
• Seiko 6194-700
• Seiko 0765-465
• Seiko 4452-985
• Seiko 6337-995
• Seiko 5221-572