Protect your car keys with this Lanpard Faraday Box set, featuring two pouches that ensure your keyless entry car key security. The black box, is designed to block signals, shielding your keys from interference and keeping them safe from theft.  it's the perfect size for your keys and other small items such as phones to block signals. Protect your keys and your peace of mind with this reliable and effective Faraday Box set.this is brand new and never been used. Some of the internal shielding may suffer slight dis coloration from the pouches but they are very high quality.  Thanks for looking.