Seiko Cal. 5646 - 427

The 5646-427 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-f7e5ce9fb43e]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1973

Related Models

• Seiko 6193-421
• Seiko 4526-995
• Seiko 6619-851
• Seiko 6639-149
• Seiko 5644-717
• Seiko 5641-363
• Seiko 4550-923
• Seiko 7183-777
• Seiko 7137-478
• Seiko 7133-309
• Seiko 0777-200
• Seiko 6161-610