So you have trouble sleeping at night? Smart devices such as Sleep Shepherd Blue might help out. This particular wearable device uses brainwave sensors and binaural beats to improve your sleep quality. This adjustable headband has thin speakers and conductive EEG sensors.
The app for this device tracks your sleep and shows your sleep patterns and head orientations. The Sleep Shepherd Blue tracks motion using a 3-axis accelerometer. It also has an alarm feature and works with iOS and Android devices. You can find out more about it here.