Seiko Cal. 6641 - 671

The Seiko 6641-671 represents an important milestone in Seiko's 1979 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-fd60ea0f27cb]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

24j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1979

Related Models

• Seiko 6160-749
• Seiko 7176-244
• Seiko 5616-277
• Seiko 5295-609
• Seiko 6178-413
• Seiko 7121-104
• Seiko 6384-183
• Seiko 6692-998
• Seiko 3870-119
• Seiko 5690-739
• Seiko 6621-408
• Seiko 5256-914