The Sawyer LED Adesso Charge Wireless Charging Desk Lamp is a modern desk lamp that includes a wireless charging pad with Qi inductive charging technology. Many smartphones have Qi technology built in, so just place your phone on the pad and it will charge right up. No cords, no mess It's that easy! All Adesso Charge products are Qi certified by the Wireless Power Consortium. Our product has been tested and verified to be safe and in compliance with the Qi standard. The Adesso Charge pad supports 5W charging on contact with the charging pad, which gets your phone from 0% to 100% in just 4-5 hours, depending on your phone model. A USB is located on the base and can charge up a second device simultaneously. Adesso Charge is unique in that you can use the Adesso Charge pad, the USB and the 7 Watt LED light all at the same time with maximum efficiency of all three. A simple on/off rotary switch on the base turns the light on and off. Just plug in the lamp and the charger will work. The light on the lamp does not even need to be turned on. This wireless charging pad will charge your phone through most materials, you do not even need to remove your case! Only metal will hinder the function of the charging pad to charge through the case.If your smartphone doesn't support Qi wireless charging, you will need to purchase a Qi compatible case, which is sold through a variety of retail channels. Or you can also charge your smartphone with the USB port that is also included in the lamp base.