The SPIRO® CARD is an electromagnetic radiation protection system specially designed to filter emissions (low and high frequency) associated with mobile phones, tablets and small wireless devices for daily use, such as headphones or smartwatches. This product has a range of 1.1 m (3.5 ft) radius and you can carry it in your purse, wallet, or phone case (the best place for 4G and 5G cell phones). Laboratory tests have shown that this electromagnetic protection system is fully compatible with electronic and wireless devices, optimising their operation, connectivity and extending their useful life.