* In like-new condition. Opened box and tested it once. It’s working well. Hempvana Rocket Pain Relief Pen, As Seen On TV, Wireless TENS Therapy, Portable Muscle Stimulator - Same Technology Used by Doctors - Muscle Pain Relief -9 Adjustable Intensity Settings-3 Unique Heads Retail price: $19.99 Technology Used By Doctors: Hempvana Rocket uses Transcutaneous Electrical Nerve Stimulation (TENS) therapy without a prescription, available for you to use at home or on the go! Important: It is normal to feel an electronic sensation on the hand holding the rocket. When in use, wet hands or lotion, will intensify this sensation. Make sure your hands are clean, dry, and lotion free to minimize this sensation. Drug-Free Pain Relief: Experience muscle pain relief in your back, knees, shoulders, hips, neck, hands, and more! Easy to Use: regular TENS unit muscle stimulator machines can be complicated to set up and use. Hempvana Rocket Relief is so easy to use. Just turn it on and simply place it where it hurts. You can feel it work, and you can see it work!