Seiko Cal. 5639 - 348

This Spring Drive model from 1966 features a 38mm Two-Tone case. Powered by the 5639 caliber with 29j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-33a155f7ade6]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

29j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1966

Related Models

• Seiko 6243-890
• Seiko 4465-584
• Seiko 6131-310
• Seiko 4575-185
• Seiko 6362-680
• Seiko 6131-981
• Seiko 6668-813
• Seiko 0761-824
• Seiko 6189-783
• Seiko 0724-111
• Seiko 4512-347
• Seiko 4482-797