Seiko Cal. 6643 - 503

The Seiko 6643-503 represents an important milestone in Seiko's 1973 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-9e90667d083e]

Also known as: Panda

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

34j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1973

Related Models

• Seiko 5644-129
• Seiko 6258-171
• Seiko 6218-729
• Seiko 6249-671
• Seiko 3837-606
• Seiko 3899-232
• Seiko 6163-610
• Seiko 7185-716
• Seiko 3834-677
• Seiko 5647-493
• Seiko 3863-544
• Seiko 5268-323