Seiko Cal. 6668 - 331

The Seiko 6668-331 represents an important milestone in Seiko's 1971 lineup. It features a Green dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-c3ef0626095b]

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Green

Jewels

21j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1971

Related Models

• Seiko 7137-915
• Seiko 0785-660
• Seiko 4497-472
• Seiko 3848-630
• Seiko 6354-735
• Seiko 4450-917
• Seiko 4542-383
• Seiko 7016-400
• Seiko 6671-204
• Seiko 0744-113
• Seiko 4496-482
• Seiko 4531-823