Seiko Cal. 4438 - 717

The Seiko 4438-717 represents an important milestone in Seiko's 1985 lineup. Powered by the 4438 caliber with 33j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-4d0e051247ae]

Also known as: World Timer

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

39mm

Case Thickness

14.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1985

Related Models

• Seiko 5214-176
• Seiko 6357-889
• Seiko 0783-970
• Seiko 3898-186
• Seiko 6665-306
• Seiko 3857-180
• Seiko 6385-360
• Seiko 0795-503
• Seiko 6137-924
• Seiko 5242-964
• Seiko 6153-261
• Seiko 0729-828