Seiko Cal. 6613 - 738

This Quartz model from 1981 features a 41mm Hardlex-Coated Steel case. With its 20mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-48ccd1c5de87]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1981

Related Models

• Seiko 6136-543
• Seiko 7120-144
• Seiko 6675-148
• Seiko 4444-111
• Seiko 4425-879
• Seiko 7192-446
• Seiko 6344-396
• Seiko 4580-871
• Seiko 3887-292
• Seiko 4410-513
• Seiko 7111-126
• Seiko 7079-911