Seiko Cal. 6639 - 914

The Seiko 6639-914 represents an important milestone in Seiko's 1989 lineup. Powered by the 6639 caliber with 33j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-eb99e81c4fce]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1989

Related Models

• Seiko 5260-822
• Seiko 4568-414
• Seiko 3854-347
• Seiko 0769-663
• Seiko 3813-597
• Seiko 6271-549
• Seiko 0776-699
• Seiko 4479-880
• Seiko 5614-142
• Seiko 4417-408
• Seiko 7082-456
• Seiko 4542-757