Seiko Cal. 4445 - 731

The Seiko 4445-731 represents an important milestone in Seiko's 1972 lineup. Powered by the 4445 caliber with 21j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-b97148275175]

Also known as: Flighty

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1972

Related Models

• Seiko 3828-303
• Seiko 6647-779
• Seiko 7114-130
• Seiko 5271-803
• Seiko 3820-954
• Seiko 5292-247
• Seiko 3891-399
• Seiko 6693-182
• Seiko 6330-732
• Seiko 6676-182
• Seiko 6628-623
• Seiko 6287-607