Seiko Cal. 4494 - 640

The Seiko 4494-640 represents an important milestone in Seiko's 1995 lineup. Powered by the 4494 caliber with 17j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-613041081510]

Also known as: Helmet, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Green

Jewels

17j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1995

Related Models

• Seiko 6138-621
• Seiko 4525-599
• Seiko 0745-810
• Seiko 6657-390
• Seiko 6339-729
• Seiko 6338-763
• Seiko 6617-907
• Seiko 0751-773
• Seiko 7139-990
• Seiko 6254-585
• Seiko 3838-774
• Seiko 4452-648