Seiko Cal. 4439 - 963

The Seiko 4439-963 represents an important milestone in Seiko's 1985 lineup. Powered by the 4439 caliber with 29j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-78c17749fc99]

Also known as: Helmet, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1985

Related Models

• Seiko 6378-591
• Seiko 7054-386
• Seiko 4564-750
• Seiko 5624-887
• Seiko 5690-439
• Seiko 6370-343
• Seiko 7089-291
• Seiko 4463-708
• Seiko 0773-878
• Seiko 4430-403
• Seiko 0756-801
• Seiko 3816-921