Seiko Cal. 6637 - 293

The Seiko 6637-293 represents an important milestone in Seiko's 1983 lineup. It features a Green dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-4fb9f9146ce9]

Also known as: Tuna, UFO

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1983

Related Models

• Seiko 5217-106
• Seiko 7073-174
• Seiko 0762-777
• Seiko 4499-251
• Seiko 7028-465
• Seiko 3839-681
• Seiko 0778-595
• Seiko 0727-155
• Seiko 7020-685
• Seiko 7081-498
• Seiko 0730-620
• Seiko 4510-179