Seiko Cal. 5637 - 506

The 5637-506 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5637 caliber with 35j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-57be592a732e]

Also known as: Tuna, Panda

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1973

Related Models

• Seiko 5664-315
• Seiko 4551-978
• Seiko 4597-163
• Seiko 5255-323
• Seiko 6397-960
• Seiko 5255-725
• Seiko 5621-504
• Seiko 3873-571
• Seiko 4423-963
• Seiko 7079-334
• Seiko 0712-296
• Seiko 4466-416