Seiko Cal. 5637 - 726

The 5637-726 is a sought-after Solar piece from Seiko's golden era. Powered by the 5637 caliber with 28j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-f10520d43aed]

Also known as: Monster, Bellmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1989

Related Models

• Seiko 7021-717
• Seiko 0792-629
• Seiko 7050-676
• Seiko 7120-823
• Seiko 5213-681
• Seiko 6117-784
• Seiko 5280-653
• Seiko 3843-809
• Seiko 4436-401
• Seiko 6343-631
• Seiko 5284-962
• Seiko 5222-337