Seiko Cal. 6663 - 976

Released in 1967, the Cal. 6663 with design code 976 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-1aa23bab58a9]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1967

Related Models

• Seiko 7067-440
• Seiko 7083-851
• Seiko 0711-261
• Seiko 7194-943
• Seiko 7187-397
• Seiko 7128-297
• Seiko 3836-409
• Seiko 6371-446
• Seiko 5244-451
• Seiko 7141-384
• Seiko 3831-624
• Seiko 3889-650