Includes 2 multi-use, independent and fully adjustable USB designer clamps High intensity, USB, wireless motor with 12 powerful functions of vibration State-of-the-art memory chip resumes on last function used Security travel lock feature hold for 3 seconds to turn on or off USB rechargeable dual charging cord included Complete charge in 1 hour Runs for 35 minutes on high speed and 45 minutes on low speed Dimensions: Each Clamp: 2.75 x 1.25 in.