Seiko Cal. 4448 - 540

The Seiko 4448-540 represents an important milestone in Seiko's 1974 lineup. Powered by the 4448 caliber with 24j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-4762f4cc5a68]

Also known as: Helmet, UFO

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

24j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1974

Related Models

• Seiko 4442-520
• Seiko 6668-266
• Seiko 6181-657
• Seiko 6358-639
• Seiko 3814-514
• Seiko 3868-326
• Seiko 6270-568
• Seiko 5670-868
• Seiko 7018-934
• Seiko 0740-925
• Seiko 4521-517
• Seiko 7175-600