Zeo Personal Sleep Monitor Coach Manager Alarm Clock W/ Headband and Sensor & Memory Card. Selling off inventory of ZEOs acquired in 2012, tested in 2013, and used in limited research studies in 2013. Selling as is. Minimal use in Child ADHD study to track and develop brain signal knowledge during certain game play. Never used by any adults or in sleep studies. Go to Gibson Research website for review of this unit or see attached JPEG. Includes TTL cable to with USB connector.