http://humansarefree.com/2018/10/how-bl ... -ears.html
How Bluetooth Can Affect Your Eyes, Ears, Brain, and Everything Else
Many people who use Bluetooth technology to connect their devices may have no idea that exposure has been linked to brain tumors as well as dizziness, sleep issues, anxiety, depression, birth defects and more. This is because Bluetooth emits the same RadioFrequency (RF) radiation as a microwave oven that cooks food.