Seiko Cal. 4446 - 455

This Hand-Winding model from 1965 features a 36mm Stainless Steel case. Powered by the 4446 caliber with 21j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-ab20479fe9fe]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1965

Related Models

• Seiko 6616-408
• Seiko 6340-319
• Seiko 6169-768
• Seiko 6395-650
• Seiko 5283-230
• Seiko 6318-897
• Seiko 6380-346
• Seiko 7131-284
• Seiko 6180-212
• Seiko 3827-687
• Seiko 3842-671
• Seiko 5234-932