Seiko Cal. 5646 - 421

The Seiko 5646-421 represents an important milestone in Seiko's 1975 lineup. With its 22mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-f215e4a5adf8]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

8.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1975

Related Models

• Seiko 3841-129
• Seiko 4424-892
• Seiko 7123-744
• Seiko 4476-534
• Seiko 6656-962
• Seiko 4449-943
• Seiko 6365-350
• Seiko 6618-677
• Seiko 6228-309
• Seiko 3858-117
• Seiko 0779-995
• Seiko 0771-636