Charge a new USB C smartphone and an existing USB A device simultaneously with this 2 port, 27 Watt wall charger. With two fully powered independent ports, 15 Watts delivers fast, optimal charging to your USB-C smartphone, while a guaranteed 12 Watt port ensures fast charging for your USB A device. USB-c devices can draw a guaranteed 15 watts from the charger if required while USB a devices can draw up to 12 watts from the charger simultaneously. Dedicated, independent power allowances ensure fast, safe charging for old and new devices alike. General information: Manufacturers 2 year guarantee.