Seiko Cal. 5660 - 772

The Seiko 5660-772 represents an important milestone in Seiko's 1991 lineup. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-af4bcb12cc22]

Also known as: Monster, Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Champagne

Jewels

17j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1991

Related Models

• Seiko 7093-151
• Seiko 6321-853
• Seiko 0787-324
• Seiko 6617-386
• Seiko 6397-684
• Seiko 4496-782
• Seiko 6322-228
• Seiko 4513-310
• Seiko 6184-164
• Seiko 7081-610
• Seiko 6658-273
• Seiko 6636-942