Seiko Cal. 7028 - 178

The Seiko 7028-178 represents an important milestone in Seiko's 1975 lineup. Powered by the 7028 caliber with 24j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-a77c4734990f]

Also known as: Silverwave, Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

24j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1975

Related Models

• Seiko 5281-208
• Seiko 6151-314
• Seiko 5260-950
• Seiko 5231-300
• Seiko 7074-311
• Seiko 4444-119
• Seiko 7173-272
• Seiko 5261-655
• Seiko 5632-788
• Seiko 4552-383
• Seiko 5220-251
• Seiko 7090-623