Muse is a smart headband that acts as your personal meditation coach. Using advanced EEG brain sensors, Muse can detect your brain activity and provide you with real-time feedback in the form of gentle audio sounds through your headphones. With the headband, all you need to do is download the app to access meditation content. Brand new, never used. Features - Lightweight Design: This ultra light rechargeable battery delivers hours of continuous run time on a single charge. Sturdy Yet Comfortable: This headband is specially designed to stay firmly in place during usage while also being comfortable and lightweight. Heart Rate Detection: Advanced sensors on the Muse 2 accurately measure heart rate and blood circulation. SmartSense EEG: SmartSense EEG sensors detect brain activity and provide you with valuable real-time feedback.