Seiko Cal. 7026 - 631

The 7026-631 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7026 caliber with 28j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-a193cd379b84]

Also known as: Sumo, Crown

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Champagne

Jewels

28j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1968

Related Models

• Seiko 6644-748
• Seiko 5645-103
• Seiko 4412-118
• Seiko 3859-376
• Seiko 6252-349
• Seiko 3838-547
• Seiko 4493-194
• Seiko 3834-159
• Seiko 6243-274
• Seiko 7138-598
• Seiko 6666-547
• Seiko 0750-445