Seiko Cal. 3887 - 744

This Hand-Winding model from 1973 features a 36mm Two-Tone case. Powered by the 3887 caliber with 28j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-f2134ed3967a]

Also known as: Rally, World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1973

Related Models

• Seiko 6266-971
• Seiko 4434-319
• Seiko 6160-191
• Seiko 7180-486
• Seiko 3877-569
• Seiko 5281-258
• Seiko 4593-926
• Seiko 7019-695
• Seiko 5634-812
• Seiko 5210-521
• Seiko 5256-167
• Seiko 6227-669