Seiko Cal. 0728 - 557

The 0728-557 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 0728 caliber with 31j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-f6aeb6b816dc]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

8.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1997

Related Models

• Seiko 5265-236
• Seiko 3877-903
• Seiko 3877-127
• Seiko 5228-446
• Seiko 6399-164
• Seiko 4469-472
• Seiko 0798-942
• Seiko 6372-699
• Seiko 6239-436
• Seiko 6272-303
• Seiko 4481-360
• Seiko 4462-789