Seiko Cal. 4537 - 650

The 4537-650 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4537 caliber with 20j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-1c36d5013aa9]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1974

Related Models

• Seiko 7189-252
• Seiko 3852-183
• Seiko 6343-853
• Seiko 0797-536
• Seiko 0737-695
• Seiko 7077-240
• Seiko 0786-103
• Seiko 6316-354
• Seiko 4479-471
• Seiko 6240-469
• Seiko 7051-333
• Seiko 6384-520