"A tuned magnetic coil located outside the body transmits power to a small, flexible antenna within the device, allowing for wireless power transfer." Energy r

"A tuned magnetic coil located outside the body transmits power to a small, flexible antenna within the device, allowing for wireless power transfer." Energy reciever is completely inside the body and the energy transmitter completely outside. Piercing skin for prolonged times is generally a very bad idea because it's a channel for infection.