A sleep-wearable wireless recorder worn on the forehead that acquires and stores nocturnal data. ARES*™* measures blood oxygen saturation and pulse rate, airflow (by nasal cannula connected to a pressure transducer), snoring levels, head movement and head position. When worn in the home, the ARES*™* provides a better profile of the patient’s breathing during sleep in his/her normal environment. Audio and visual indicators notify the user when the ARES*™* requires adjustment, thus increasing the reliability of the device in the home. The small size of ARES*™* allows it to be comfortably worn in all sleep positions. The results are then sent to a sleep doctor to be reviewed and diagnosed.