120v Only. * Variable Speed * This Version Of Our Jeanie Rub Allows You To Vary The Speed Of The Massager From 1400 To 4600 Rpm * Lower Speeds Deliver A More Soothing Massage While Faster Speeds Are More Invigorating * Features An Easily Adjustable  Switch Placed Conveniently Near Your Finger Tips * Provides Deep-penetrating Action That Safely Relaxes Tight Muscles And Stimulates Circulation For All Body Types * Ideal For Personal Health  Fitness And Sports Massage * The Accessory Posts Allow You To Add Precise  Trigger Point And Pressure Point Therapy To Your Massge * Item Has A 1 Yr Warranty