Seiko Cal. 6618 - 561

This Spring Drive model from 1972 features a 46mm Two-Tone case. With its 19mm lug width and 10.8mm profile, it sits comfortably on most wrists. [seikata-wm-46ff37956a24]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1972

Related Models

• Seiko 6122-624
• Seiko 4542-700
• Seiko 7057-561
• Seiko 7113-691
• Seiko 5272-322
• Seiko 4463-318
• Seiko 5665-357
• Seiko 7127-263
• Seiko 5275-274
• Seiko 6128-409
• Seiko 4534-296
• Seiko 6387-704