Used in like new condition Vagus Nerve Stimulator programmable RESEARCH EDITION DIGITAL UPGRADE not standard fixed parameter model by vagus.net. I PAID AN EXTRA $299 plus $299. Comes with original case, upgraded silver electrode ear clips which were never used, usb charging cable and instruction manual. If you’re looking for a tragus vagus nerve stimulator with full control of parameters and accuracy this is the device. The parameters are only changed with mobile app on phone. For more info check out the website vagus.net. Look at the screenshot photo of the mobile app parameter setup. Also check out caputron.com VNS devices.