Seiko Cal. 4540 - 617

This Spring Drive model from 1974 features a 36mm Two-Tone case. With its 21mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-0114f8142103]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1974

Related Models

• Seiko 4487-187
• Seiko 6199-757
• Seiko 6279-331
• Seiko 4548-352
• Seiko 3858-343
• Seiko 6165-753
• Seiko 4589-896
• Seiko 6185-452
• Seiko 6699-502
• Seiko 6298-379
• Seiko 6278-404
• Seiko 4591-926