Seiko Cal. 5630 - 255

The Seiko 5630-255 represents an important milestone in Seiko's 1991 lineup. Powered by the 5630 caliber with 29j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-d7195c400dac]

Also known as: Helmet, Bellmatic

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

42mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1991

Related Models

• Seiko 6387-785
• Seiko 6638-774
• Seiko 6276-517
• Seiko 0742-707
• Seiko 0739-271
• Seiko 5253-741
• Seiko 6675-591
• Seiko 3872-150
• Seiko 6630-585
• Seiko 3887-828
• Seiko 0794-855
• Seiko 6366-158