The device stimulates the sensory nerves, which carry neural impulses to the brain and trigger a natural response that blocks pain signals in your body. Wearers can feel light pressure or a buzzing feeling and will begin to feel pain relief in about 15 minutes after wearing. Therapy sessions last 60 minutes and wearers can continue with more sessions throughout the day or night as needed with 1 hour breaks in between. This drug free pain relief can be monitored via a smart phone app, but it is not necessary to use. Quell is currently available for sale via an IndieGoGo campaign starting at $199 with a 1 month supply of electrodes.