Seiko Cal. 5637 - 720

This Spring Drive model from 1996 features a 42mm Hardlex-Coated Steel case. Powered by the 5637 caliber with 31j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-132fab96e64e]

Also known as: Monster, Shogun

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Cream

Jewels

31j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1996

Related Models

• Seiko 3874-630
• Seiko 6669-374
• Seiko 5639-806
• Seiko 5646-655
• Seiko 4556-910
• Seiko 4571-723
• Seiko 6364-134
• Seiko 5299-850
• Seiko 5621-304
• Seiko 6649-501
• Seiko 6254-820
• Seiko 4442-736