Uses USB 3.1 Gen 1 USB technology to achieve fast data transfer and shortest charge times. Charges the latest USB-C devices whilst USB-A connector allows use of traditional USB chargers. USB Type C connector features a reversible design, making plugging-in easier. USB Type A connector works with all existing USB-A chargers and connections. Compatible with the latest devices and Mac or Windows PCs. 5GBPS transfer speed. Supports Fast Charging 5GBPS Transfer Speed 10x Faster than USB 2.0 (480MBPS) 5V/3A Reversible Type C Connector Connection Allows Charging in Case Supports Fast Charging 5GBPS Transfer Speed 10x Faster than USB 2.0 (480MBPS) 5V/3A Reversible Type C Connector Connection Allows Charging in Case