Seiko Cal. 4491 - 277

The Seiko 4491-277 represents an important milestone in Seiko's 1983 lineup. Powered by the 4491 caliber with 29j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-23a0ec27bf49]

Also known as: Tuna, World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1983

Related Models

• Seiko 4453-556
• Seiko 3830-178
• Seiko 6346-383
• Seiko 6189-417
• Seiko 5610-833
• Seiko 6316-930
• Seiko 6675-193
• Seiko 5698-608
• Seiko 0790-685
• Seiko 6252-550
• Seiko 5260-181
• Seiko 7129-811