Seiko Cal. 4487 - 475

The Seiko 4487-475 represents an important milestone in Seiko's 1968 lineup. Powered by the 4487 caliber with 21j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-81cec3985e00]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

14.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1968

Related Models

• Seiko 0760-286
• Seiko 5293-245
• Seiko 5260-866
• Seiko 6687-597
• Seiko 6670-301
• Seiko 6159-501
• Seiko 0781-941
• Seiko 6235-564
• Seiko 0721-997
• Seiko 6369-745
• Seiko 6117-849
• Seiko 4476-713