This unit is Battery Operated and Self-Contained.
  Comes Complete with the following:
• A Belt/Pocket Clip on the Housing.
• 4 feet of Straight Vacuum Hose.
• 4 feet of Coiled Vacuum Hose.
• A Set of Seven Vacuum Tips.
• A Vacuum Pick-Up Handle
• 9 Volt Disposable Alkaline Battery
• Lightweight- Only 156 grams.
• Runs up to Eight Hours Continuously on One 9 Volt
  Alkaline Battery.