Seiko Cal. 4448 - 737

The 4448-737 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4448 caliber with 28j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-c927bc228cfc]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Cream

Jewels

28j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1979

Related Models

• Seiko 6264-925
• Seiko 6189-261
• Seiko 6188-550
• Seiko 7122-754
• Seiko 6114-243
• Seiko 5268-708
• Seiko 3868-263
• Seiko 7128-919
• Seiko 3860-462
• Seiko 4569-600
• Seiko 4552-301
• Seiko 7189-813