Seiko Cal. 5687 - 749

The Seiko 5687-749 represents an important milestone in Seiko's 1971 lineup. Powered by the 5687 caliber with 34j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-c362e5d59242]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Cream

Jewels

34j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1971

Related Models

• Seiko 7062-114
• Seiko 6379-654
• Seiko 7082-247
• Seiko 5682-307
• Seiko 3820-107
• Seiko 6221-883
• Seiko 6650-265
• Seiko 6129-900
• Seiko 5225-209
• Seiko 5245-372
• Seiko 4496-589
• Seiko 4524-161