The Xumo Stream Box 4K Streaming Device is a high-quality media streamer that offers 4K resolution and Dolby Vision audio for an immersive viewing experience. With Wi-Fi connectivity and HDMI output, it allows for easy setup and seamless integration into your home entertainment system. The model ESST11AEI also features voice control for added convenience. This unit, which comes in an open box, provides a top-notch streaming solution for those looking to enjoy their favorite content in stunning 4K quality.