Seiko Cal. 4490 - 921

The Seiko 4490-921 represents an important milestone in Seiko's 1999 lineup. Powered by the 4490 caliber with 27j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-00f11796e0c6]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

27j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1999

Related Models

• Seiko 7121-102
• Seiko 6310-516
• Seiko 6619-216
• Seiko 0752-585
• Seiko 6147-172
• Seiko 4483-769
• Seiko 4457-647
• Seiko 0787-789
• Seiko 6221-735
• Seiko 7081-729
• Seiko 7157-210
• Seiko 6232-749