Seiko Cal. 3874 - 643

The 3874-643 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3874 caliber with 19j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-6a0970ae4fe9]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Cream

Jewels

19j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1987

Related Models

• Seiko 7086-963
• Seiko 6381-952
• Seiko 7135-320
• Seiko 7056-136
• Seiko 6228-947
• Seiko 4577-759
• Seiko 5639-101
• Seiko 7063-299
• Seiko 4411-708
• Seiko 5214-413
• Seiko 5634-771
• Seiko 6399-519