The attractive and stylish Cruz Case technology dramatically reduces the amount of radiation directed at your head. Simply flip the Cruz Case lid open to receive or make calls, then close back into protective mode and talk through the flip lid cover with perfect clarity. Also protects you while you carry your phone when you keep the lid cover between you and your phone. Patent pending design does not affect the signal to the cell tower. Ultra-slim design also provides scratch protection for the display and helps keep the screen clean.