Certified for safety and compatibility to provide Qi compatible devices with up to 15-Watts of fast wireless charging power (wireless charging rate varies by phone manufacturer). Shuts down the qi wireless charger element down when something other than a device’s Qi charging area is detected. Simply place your device near the MagicGrip charging base and watch the arms automatically adjust to fit your device. Secure a mobile device to most firm & flat surfaces with the StickGrip™ base. LED intensity adjusts in dark and light surroundings. Apple and Samsung Fast Charge Compatible.