Seiko Cal. 4450 - 644

The 4450-644 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-6731f4571829]

Also known as: Sumo, Emperor

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1990

Related Models

• Seiko 0743-996
• Seiko 7145-716
• Seiko 7048-567
• Seiko 0774-741
• Seiko 5219-270
• Seiko 7110-202
• Seiko 3861-311
• Seiko 6169-404
• Seiko 6383-617
• Seiko 4530-828
• Seiko 5630-146
• Seiko 3893-591