Seiko Cal. 6635 - 504

The Seiko 6635-504 represents an important milestone in Seiko's 1986 lineup. Powered by the 6635 caliber with 32j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-01714b77ca97]

Also known as: Turtle, Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

8.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1986

Related Models

• Seiko 5668-105
• Seiko 3816-364
• Seiko 6238-877
• Seiko 7032-976
• Seiko 4420-649
• Seiko 6155-503
• Seiko 5687-177
• Seiko 5267-148
• Seiko 7019-913
• Seiko 6312-754
• Seiko 3824-127
• Seiko 4538-393