Seiko Cal. 6660 - 506

The Seiko 6660-506 represents an important milestone in Seiko's 1979 lineup. It features a Silver dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-f13653e9ae63]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1979

Related Models

• Seiko 7126-236
• Seiko 6648-690
• Seiko 5663-605
• Seiko 4422-661
• Seiko 3851-651
• Seiko 5654-951
• Seiko 7073-780
• Seiko 7186-232
• Seiko 4486-820
• Seiko 6292-769
• Seiko 3824-917
• Seiko 5611-593