Seiko Cal. 7188 - 728

The Seiko 7188-728 represents an important milestone in Seiko's 1977 lineup. It features a Silver dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-9fc1c46faa80]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1977

Related Models

• Seiko 6639-971
• Seiko 4423-282
• Seiko 4579-102
• Seiko 6681-482
• Seiko 4527-661
• Seiko 5648-306
• Seiko 7168-166
• Seiko 6212-269
• Seiko 5284-217
• Seiko 4562-844
• Seiko 7150-956
• Seiko 6385-483