Seiko Cal. 6639 - 765

The 6639-765 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6639 caliber with 34j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-5cfb3de8ed88]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1968

Related Models

• Seiko 0795-114
• Seiko 0768-692
• Seiko 6166-375
• Seiko 5633-550
• Seiko 6341-840
• Seiko 6195-828
• Seiko 7117-229
• Seiko 6197-622
• Seiko 6338-577
• Seiko 6266-414
• Seiko 7196-537
• Seiko 3844-901