Seiko Cal. 4437 - 442

Released in 1965, the Cal. 4437 with design code 442 was part of Seiko's domestic market collection. Powered by the 4437 caliber with 33j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-1a931ed219ed]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1965

Related Models

• Seiko 7073-579
• Seiko 5217-636
• Seiko 3847-232
• Seiko 7084-484
• Seiko 6398-537
• Seiko 4459-823
• Seiko 4599-746
• Seiko 6623-661
• Seiko 6178-851
• Seiko 7180-976
• Seiko 4528-947
• Seiko 4581-736