Seiko Cal. 4491 - 644

The Seiko 4491-644 represents an important milestone in Seiko's 1965 lineup. Powered by the 4491 caliber with 23j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-403cf026966b]

Also known as: Panda, World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

12.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1965

Related Models

• Seiko 6159-195
• Seiko 4431-920
• Seiko 6623-443
• Seiko 7063-962
• Seiko 6338-299
• Seiko 7054-165
• Seiko 4535-323
• Seiko 0762-432
• Seiko 6643-854
• Seiko 5212-767
• Seiko 4476-750
• Seiko 7076-658