Seiko Cal. 5666 - 257

The Seiko 5666-257 represents an important milestone in Seiko's 1980 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-f0e39823f82a]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1980

Related Models

• Seiko 7068-272
• Seiko 3896-806
• Seiko 5640-222
• Seiko 7012-877
• Seiko 5298-144
• Seiko 4475-307
• Seiko 6651-450
• Seiko 7113-310
• Seiko 4462-945
• Seiko 0710-440
• Seiko 3899-711
• Seiko 6332-878