This effective biocompatible device protects against the harmful signals emitted by cellular phones. Tecno uses patented CMO (Compensatory Magnetic Oscillator) technology, which maintains biological equilibrium and has been scientifically proven to reduce electromagnetic stress caused by these frequencies. (Click here for a 34-page research study.) Based on studies showing that alpha waves (which the brain emits during meditation and relaxation) enhance the immune system, the Tecno contains a frequency-imprinted solution that provides similar support, conducting positive energies to the immune system in a biologically friendly manner. Works with Bluetooth. Attaches with adhesive backing. Buy 2 or more at a reduced price. Click here for a flier on the Tecno.