Seiko Cal. 5656 - 448

This Quartz model from 1971 features a 35mm PVD Black case. Powered by the 5656 caliber with 20j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-511040be258c]

Also known as: Silverwave, Sea Horse

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1971

Related Models

• Seiko 4474-320
• Seiko 4495-109
• Seiko 6116-546
• Seiko 0766-640
• Seiko 0745-606
• Seiko 5649-300
• Seiko 4568-445
• Seiko 7060-178
• Seiko 0761-462
• Seiko 5225-140
• Seiko 5288-171
• Seiko 4539-127