Seiko Cal. 4455 - 641

The Seiko 4455-641 represents an important milestone in Seiko's 1970 lineup. Powered by the 4455 caliber with 18j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-123ed9df511f]

Also known as: Helmet, Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1970

Related Models

• Seiko 3851-838
• Seiko 0798-185
• Seiko 7143-444
• Seiko 4526-376
• Seiko 4435-453
• Seiko 7075-125
• Seiko 4495-890
• Seiko 6672-679
• Seiko 5630-153
• Seiko 4485-997
• Seiko 5287-575
• Seiko 0778-687