Seiko Cal. 6645 - 646

The Seiko 6645-646 represents an important milestone in Seiko's 1984 lineup. With its 18mm lug width and 12.9mm profile, it sits comfortably on most wrists. [seikata-wm-3545deaf4d0d]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1984

Related Models

• Seiko 5665-568
• Seiko 0746-323
• Seiko 0750-804
• Seiko 5651-867
• Seiko 7115-847
• Seiko 6181-129
• Seiko 0794-422
• Seiko 7115-989
• Seiko 6117-229
• Seiko 4485-317
• Seiko 6112-694
• Seiko 3835-388