TechMatte Qi-standard Wireless Charger Receiver Coil for SAMSUNG Galaxy S4 SIV Designed specifically for Samsung Galaxy S4 Ultra-thin, sleek design - won't add extra bulk/weight to your device Wireless Charger Receiver allows your Samsung Galaxy S4 to experience the effortless convenience of wireless charging Enables your Galaxy S4 device to be compatible with any Qi-standard wireless charger (not included) Simple, tool-free installation process