Seiko Cal. 4448 - 778

The Seiko 4448-778 represents an important milestone in Seiko's 1967 lineup. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-974a77ddbb4f]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1967

Related Models

• Seiko 6165-164
• Seiko 6393-323
• Seiko 0763-975
• Seiko 6252-959
• Seiko 4541-656
• Seiko 7146-297
• Seiko 3867-783
• Seiko 0737-177
• Seiko 0740-709
• Seiko 0711-120
• Seiko 5285-717
• Seiko 6633-315