Seiko Cal. 0728 - 134

The 0728-134 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0728 caliber with 34j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-aee4b5e2e6d6]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1981

Related Models

• Seiko 0756-987
• Seiko 0722-166
• Seiko 6155-343
• Seiko 3876-662
• Seiko 6341-257
• Seiko 6184-607
• Seiko 6637-810
• Seiko 4486-915
• Seiko 6178-773
• Seiko 4473-706
• Seiko 7051-261
• Seiko 5277-774