Seiko Cal. 6665 - 318

This Automatic model from 1971 features a 37mm Hardlex-Coated Steel case. It features a Silver dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-f650ec9d3f1c]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1971

Related Models

• Seiko 4421-952
• Seiko 7065-252
• Seiko 4487-288
• Seiko 5655-875
• Seiko 6651-412
• Seiko 5249-762
• Seiko 3854-257
• Seiko 6665-517
• Seiko 6683-904
• Seiko 5250-241
• Seiko 0729-663
• Seiko 5285-124