Seiko Cal. 6636 - 321

The Seiko 6636-321 represents an important milestone in Seiko's 1969 lineup. With its 22mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-cd9950ffc38a]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1969

Related Models

• Seiko 4472-780
• Seiko 6129-742
• Seiko 0737-554
• Seiko 6148-111
• Seiko 7161-902
• Seiko 5619-908
• Seiko 0731-636
• Seiko 7110-645
• Seiko 5242-576
• Seiko 5662-332
• Seiko 0776-317
• Seiko 0765-610