Manufactured from 100% Bamboo Vaneer the Madison alarm clock provides Fast Qi wireless charging combined with a dimmable clock, multiple alarm settings, temperature sensor and touch sensor buttons is ideal use in the home or office. Complete with Foreign Object Detection, Over Current Protection and Dynamic Power Limiting protection, simply connect the Madison to any 5 Volt (DC) power source and place your phone onto the top of the clock to start charging. Compatible with any smart phone or device meeting the Qi wireless charging standards (5W, iPhone up to 7.5W, Samsung up to 10W). Material: Bamboo.