Seiko Cal. 0725 - 641

The 0725-641 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0725 caliber with 36j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-d8cb8a97e5f3]

Also known as: Sumo, Shogun

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1981

Related Models

• Seiko 3811-648
• Seiko 4549-829
• Seiko 6635-683
• Seiko 4461-613
• Seiko 5225-161
• Seiko 7156-726
• Seiko 5639-287
• Seiko 4467-417
• Seiko 5641-121
• Seiko 5242-142
• Seiko 6238-756
• Seiko 7163-994