Seiko Cal. 5639 - 857

The Seiko 5639-857 represents an important milestone in Seiko's 1981 lineup. Powered by the 5639 caliber with 26j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-1f2ec1e0bb3c]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Burgundy

Jewels

26j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1981

Related Models

• Seiko 5699-246
• Seiko 7058-948
• Seiko 6243-948
• Seiko 0754-983
• Seiko 4410-884
• Seiko 4448-910
• Seiko 4482-408
• Seiko 0789-739
• Seiko 4486-483
• Seiko 5224-254
• Seiko 4448-806
• Seiko 6118-500