Laptop and Technology Shields actually transform their hazardous micro/radio fields into a powerful balancing field of protection around you! These Shields are applied using a Velcro sticker for easy application and removal and are approx. (38 mm/1.5 inches) in diameter. Attach these Shields to your TV’s, laptops, routers, microwaves, refrigerators, and other medium to large sized appliances and electronics. Place the Shield on the microwave door or window; place it on your laptop where the least amount of heat emanates to avoid softening of the Shield. For additional protection add these to water dispensers, faucets, and showerheads to encode your water!