- Blocks cell phone signals<br />- Phones will not ring while inside the second layer<br />- Signal is automatically re-acquired when put the phone in the outer layer<br />- Depending on your operator's network configuration、 callers will hear a "temporarily<br />unreachable" message instead of "cell phone is off" ** message varies between<br />operators<br />                                                                                                                                Dimensions: 5.51 in x 3.94 in x 0.16 in<br />Weight: 0.81 oz