Our nasal spray training device is an accurate training device to instruct opioid overdose rescuers on the proper administration of 4mg Naloxone nasal spray. The trainer does not atomize liquid. It is spring loaded to allow for optimal demonstration during training. Ideal take away from educational training classes at University/College campuses, law enforcement training centres, any other public educational events. This trainer contains NO medicine and is not for human use in rescuing an opioid overdose victim. It is for training purposes only. Sold in packages of 4. *For reasons of hygiene, this product is not returnable.