The ACD-Power Q303 wall charger designed for quick and safe power supply of devices with USB inputs. Q303 charges any mobile device via USB up to three devices at once and supports quick charging technology Qualcomm® QuickCharge™ 3.0. Patented technology Smart DC allows to detect the correct voltage output automatically, providing the safest current for charging. Advanced circuitry and built in safeguards to protect your devices against excessive current, overheating, and over charging. Charger has a build-in protection of overvoltage and short circuit. High-quality materials provide long-lasting function and reliability. Portable size, lightweight, auto-voltage and durability does ACD-Power Q303 like best for traveling. The device designed for indoor using and has a double electrical insulation.