Seiko Cal. 6663 - 237

Released in 1986, the Cal. 6663 with design code 237 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-bcc5917cd8a5]

Also known as: Tuna, Sea Horse

Specifications

Movement

Solar

Case Material

Titanium

Case Width

45mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Burgundy

Jewels

36j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1986

Related Models

• Seiko 7159-800
• Seiko 5296-170
• Seiko 4543-289
• Seiko 7156-229
• Seiko 4493-535
• Seiko 6168-304
• Seiko 7193-405
• Seiko 3840-132
• Seiko 0754-756
• Seiko 5667-362
• Seiko 3873-858
• Seiko 0792-597