The 70W GaN USB-C 4-Port Charger can simultaneously charge 4 devices. The charger uses GaN technology which enables it to deliver a significant amount of power in a small package. All the USB-C ports support Power Delivery 3.0/2.0 technology, the USB-A port supports QC 18W fast charge. When using just one of the ports, the first port supports up to 70W, enabling MacBook, laptops, tablets, handheld game consoles, and other mobile devices to charge at the fastest rates possible. The second and third port supports up to 20W, enough for charging a second tablet or phone. The product keeps 45W on the first port while other port(s) is/are being use so you can seamlessly charge your laptop and other devices at the same time. With the small and light design, the charger can attach against the wall more firmly, reducing the chance of the charging falling off the wall. Not to mention, surge, overcharging, overcurrent, and overheating protection are all included