Seiko Cal. 5618 - 431

The Seiko 5618-431 represents an important milestone in Seiko's 1974 lineup. With its 22mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-1b756b62acf2]

Also known as: Pogue, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1974

Related Models

• Seiko 7170-939
• Seiko 6296-259
• Seiko 0781-367
• Seiko 0724-362
• Seiko 7197-376
• Seiko 5650-861
• Seiko 6258-450
• Seiko 4432-899
• Seiko 5247-153
• Seiko 6639-144
• Seiko 6376-621
• Seiko 5220-130