Seiko Cal. 5640 - 517

The 5640-517 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5640 caliber with 20j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-317f2e28fda6]

Also known as: Sea Horse, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1994

Related Models

• Seiko 0724-370
• Seiko 5274-907
• Seiko 6642-637
• Seiko 3844-862
• Seiko 0713-817
• Seiko 3820-657
• Seiko 3895-555
• Seiko 7052-393
• Seiko 6150-401
• Seiko 4453-630
• Seiko 5261-406
• Seiko 6297-941