Product Description Specifications The Madison provides fast and efficient wireless charging while still combining the features of a dimmable bedside clock. Eco-friendly and manufactured in 100% bamboo casing, with multiple alarms, touch-sensor buttons, and temperature sensors, ideal for home or office use. Complete with Foreign Object Detection, over-current and dynamic power limiting protection, this desktop charge clock is compatible with any smartphone or device meeting the Qi wireless charging standard (5W, iPhone up to 7.5W, Samsung up to 10W). Includes a 1 metre micro USB charge cable and user manual. Material: Bamboo. Product Size: 135 x 70 mm Branding Area: 80 mm (dia) (4CP, Laser), 50 x 50 mm (Pad) Standard Packaging: Black Box Certification: CE, RoHS, Qi Compatible, FOD, OCP, DPL Protection Specifications: Micro USB Input: DC 5V / 2A, DC 9V / 1.67A (Max), Wireless Output Power: 5W / 7.5W / 10W, Charge Coils: 1, Output Efficiency: ≥ 72%, Transmission Range: ≤ 10 mm, Frequency Range: 110 KHz - 205 KHz. Trademarks: iPad and iPhone are registered trademarks of Apple Inc.