What comes with an At-1 2EW Clinical System:The BrainMaster Atlantis II 2x2 EEG device, 2.5SE software CD, cleaning gel, conductive paste, 5 gold plated electrodes, designer bag, remote training Passkey™ license (as indicated by clinician) and 90-Day Parts and Labor Warranty with additional 12 month extended warranty and 12 month complimentary Affiliate membership. Exception: Basic systems only offer 90 day warranty. Earclips optional. (Additional types of PassKeys™ may be purchased to add to the functionality and flexibility to the device giving clinicians or trainees personalized training choices. Recommended on Windows.® XP, Vista or 7.