Whether at work or play, the DefenderShield® Cell Phone EMF Protection & Anti-Radiation Holster helps protect from wireless Electromagnetic Field (EMF) radiation, while keeping your cell phone or other electronic device secure and accessible. Ultra Armor® Shielding Technology in the back of the DefenderShield Radiation Protection Holster blocks wireless EMF and 5th Generation radiation emitted by cell phones and other devices, without affecting cellular service or connectivity. Perfect For: Office, Field, and Real Estate Workers, Walking, Commuting, Daily Activities. All Features: Ultra Armor® Shielding Technology blocks up to 99% of wireless EMF and 5th Generation radiation (300 Hz-90 GHz). Shielding placed in the back helps protect your body from EMF emissions while ensuring your phone still receives a signal. Durable exterior with smooth magnetic closure. Durable metal belt clip. Easily slide phone in and out without affecting connectivity.