With this stylish accessory, you can charge your compatible smartphones, and other Qi-compatible devices, without the need to plug your device in to a wall charger or USB port. No need to remove your Samsung cover or most 3rd party covers to successfully charge. Product Specifications: Power Source: USB; USB Ports: 1 Samsung: S7/S7edge, S6/S6 edge, NOTE5; LG: G5, G4, G3 (Single Sim Card Only); Google: Nexus 4, Nexus 5; Nokia: 920,928.