This black Einova Sirius 65W Universal Charger Microsoft Bundle features revolutionary EcoVoltas power conversion architecture, which gives the Sirius an incredible 93% energy efficiency with 50% lower internal charging temperatures providing more power, and less heat. The flush-to-wall body design stays perfectly balanced in a wall socket and maximizes space behind furniture. Lightweight and compact, Sirius 65W is perfect for travel thanks to lateral folding prongs and the detachable USB-C cable (6ft) with built-in cable management system. It includes a Microsoft Surface certified cable.