Seiko Cal. 6637 - 782

Released in 1984, the Cal. 6637 with design code 782 was part of Seiko's domestic market collection. Powered by the 6637 caliber with 31j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-3a66f8e87059]

Also known as: UFO, Golden Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1984

Related Models

• Seiko 4422-402
• Seiko 3827-696
• Seiko 6680-677
• Seiko 0765-167
• Seiko 7099-599
• Seiko 0769-805
• Seiko 4572-965
• Seiko 5231-400
• Seiko 5236-765
• Seiko 6188-392
• Seiko 7170-422
• Seiko 0782-669