Seiko Cal. 5681 - 207

The Seiko 5681-207 represents an important milestone in Seiko's 1975 lineup. Powered by the 5681 caliber with 21j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-345d3e527388]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1975

Related Models

• Seiko 6385-167
• Seiko 7125-920
• Seiko 5691-959
• Seiko 4499-483
• Seiko 6319-951
• Seiko 4566-896
• Seiko 6627-524
• Seiko 5243-276
• Seiko 7154-922
• Seiko 6210-505
• Seiko 6194-425
• Seiko 4459-564