The present invention relates to an auricular neurostimulation device (1) wearable by a user and configured to stimulate the Auricular Branch of Vagus Nerve (ABVN) on the user's ear: the device (1) comprises at least two electrodes (2, 3) designed to be located in the cymba and in the cavity of the cavum conchae respectively； the electrodes (2, 3) stimulate the nerve ramifications of the cymba and the cavum conchae, respectively, when an electrical voltage difference is applied between them.The invention further refers to an auricular neurostimulation system comprising an auricular neurostimulation device (1) as described and a charging case (13) where the device (1) can charge an internal battery (10) and where the device (1) discharges into this case (13) the data captured by the photoplethysmographic or biosensor (5) during stimulation and sends them to a dedicated platform in the cloud. The invention also refers to a method of operation of an auricular neurostimulation system as described.
