Seiko Cal. 4557 - 961

This Spring Drive model from 1978 features a 36mm Two-Tone case. With its 18mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-a444f883223d]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

18j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1978

Related Models

• Seiko 6120-755
• Seiko 6635-551
• Seiko 0765-372
• Seiko 7089-842
• Seiko 6174-644
• Seiko 4557-166
• Seiko 3827-217
• Seiko 7195-920
• Seiko 7164-763
• Seiko 6179-197
• Seiko 4514-429
• Seiko 6367-927