The SPRINT MAGIC BOX GOLD U587-PSU-SP is a signal booster specifically designed for Sprint network compatibility. This 4g signal booster comes in a sleek gold color and is compact enough to be placed on a desktop or desk. The box includes a signal booster and has one port for connection. The remote antenna is designed for indoor use, making it convenient for improving cell phone signal strength in home or office environments. Made of plastic, this product from Sprint is compatible with various phone brands and is a practical solution for enhancing cell phone connectivity.