Adopting a fully sealed optical system that prevents dust pollution on optical components (IP5X certification), Say goodbye to screen yellowing, black dots, and light leakage issues. This WiFi projector is equipped with an advanced 5G WiFi chip, which can effectively avoid signal interference. Also, this mini projector includes two built-in speaker and supports the 5.2 Bluetooth function, which allows connection with Bluetooth headsets, Bluetooth speakers, Sound bars, and AirPods without hassle.