Seiko Cal. 6681 - 563

The 6681-563 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6681 caliber with 20j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-63e6bd6b12ea]

Also known as: Sumo, Navigator

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

11.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1979

Related Models

• Seiko 5636-295
• Seiko 4533-381
• Seiko 5265-323
• Seiko 3886-393
• Seiko 6629-444
• Seiko 4598-143
• Seiko 6668-920
• Seiko 6652-581
• Seiko 6250-785
• Seiko 6250-482
• Seiko 4568-117
• Seiko 3899-498