Seiko Cal. 6660 - 999

The Seiko 6660-999 represents an important milestone in Seiko's 1971 lineup. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-e82d333843a2]

Also known as: Samurai, Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1971

Related Models

• Seiko 6194-514
• Seiko 4488-804
• Seiko 4510-913
• Seiko 0791-637
• Seiko 5685-814
• Seiko 7023-701
• Seiko 0792-712
• Seiko 4518-708
• Seiko 7096-820
• Seiko 6668-800
• Seiko 7187-285
• Seiko 7187-542