These EMF Shields can also be attached to your watch, iPod, hand-held computer, hair dryer, and other small appliances! Small in size, approx. (19 mm/0.75 inches) for the cell and (6.35 mm/0.25 inches) for the bluetooth, these shields easily attach to your device. These shields never deplete, thus never need to be replaced. They can be conveniently removed and transferred when you need to replace your phone, etc. Once attached, the shields do not effect the operation to the phone, watch, blow dryer, or small appliances. By reformatting the micro/radio waves the shields energetically balance the body when carried next to it or used close to the brain!