Seiko Cal. 6641 - 540

This Automatic model from 1972 features a 44mm Titanium case. With its 20mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-bd723d0383e6]

Also known as: UFO, Emperor

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1972

Related Models

• Seiko 6214-871
• Seiko 5647-605
• Seiko 6232-804
• Seiko 4418-681
• Seiko 6318-520
• Seiko 6345-248
• Seiko 0765-512
• Seiko 7080-718
• Seiko 5618-101
• Seiko 6646-737
• Seiko 3814-935
• Seiko 5241-216