• Cable of the Metrognome
• Item Level 219Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when equipped
  
• Plate
• Waist
• 1306 Armor
• +69 Stamina
  +57 Intellect
• Durability 55 / 55
• Requires Level 80
• Equip: Improves haste rating by 49.
  Equip: Restores 22 mana per 5 sec.
  Equip: Increases spell power by 92.
• "Timing belt."
• 
• Sell Price: 7 41 61

Source

This item can be found inside Cache of Innovation after defeating Mimiron in the 10-man version of Ulduar.

Patch changes

• Patch 3.1.0 (14-Apr-2009): Added. 
  

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB