Seiko Cal. 5645 - 375

The Seiko 5645-375 represents an important milestone in Seiko's 1968 lineup. With its 18mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-e8db2bcae937]

Also known as: Tuna, World Timer

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1968

Related Models

• Seiko 4554-182
• Seiko 4547-158
• Seiko 0753-414
• Seiko 4434-918
• Seiko 6120-965
• Seiko 7032-938
• Seiko 6346-696
• Seiko 3830-896
• Seiko 6156-824
• Seiko 6327-469
• Seiko 0762-582
• Seiko 4511-703