Seiko Cal. 5687 - 561

This Quartz model from 1981 features a 41mm Hardlex-Coated Steel case. Powered by the 5687 caliber with 27j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-ae56aa51da05]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1981

Related Models

• Seiko 3850-497
• Seiko 4515-284
• Seiko 4432-895
• Seiko 6625-905
• Seiko 4451-361
• Seiko 6225-878
• Seiko 5287-555
• Seiko 3839-634
• Seiko 4547-440
• Seiko 4417-968
• Seiko 5688-298
• Seiko 6113-676