Seiko Cal. 4440 - 522

The Seiko 4440-522 represents an important milestone in Seiko's 1977 lineup. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-23ce8ad236c8]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Titanium

Case Width

46mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1977

Related Models

• Seiko 6162-476
• Seiko 7023-845
• Seiko 6289-593
• Seiko 6642-755
• Seiko 6350-846
• Seiko 7017-248
• Seiko 7134-235
• Seiko 6378-269
• Seiko 7083-991
• Seiko 0743-338
• Seiko 0754-870
• Seiko 6122-735