Seiko Cal. 5261 - 378

The Seiko 5261-378 represents an important milestone in Seiko's 1999 lineup. Powered by the 5261 caliber with 34j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-c7a5317180a8]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1999

Related Models

• Seiko 7028-626
• Seiko 6638-707
• Seiko 7133-492
• Seiko 6667-201
• Seiko 3840-810
• Seiko 4437-220
• Seiko 6231-861
• Seiko 4422-301
• Seiko 6173-923
• Seiko 3884-581
• Seiko 6635-490
• Seiko 5627-862