Only opened for inspection. Electric Focus/Automatic Keystone Correction: Equipped with an intelligent electric focus system that replaces traditional manual adjustments. Precise focus adjustment is possible within milliseconds with a single button press on the remote control. Even if the projector is moved, screen calibration is completed with one touch, eliminating the need for troublesome adjustments when sharing a large-screen movie with friends. Automatic vertical keystone correction and 80%-100% zoom function automatically correct image distortion even if the installation position changes. It saves time and provides accurate images, allowing for flexible installation without worrying about furniture placement or the viewing angle. 20,000LM High Brightness & 150-inch Large Screen: Recreates a 150-inch theater-class screen that breaks through spatial limitations. In addition to an optical system that maintains 20,000 lumens of ultra-high brightness and a 10,000:1 contrast ratio, true 720P native resolution and 4K decoding technology provide clear and colorful images even on a large screen. An immersive 3D experience is possible with white wall projection, eliminating the need for a dedicated screen. Gentle on the eyes with diffuse light imaging and blue light cut technology, making it safe for children and the elderly. High brightness and high resolution provide an optimal viewing environment. Built-in WiFi6 & Bluetooth 5.4 3D Speaker Integrated Stand: Supports 2.4G/5GHz bands with the latest WiFi6, allowing for comfortable viewing of high-definition videos, online games, and live streaming with low latency. Equipped with a mirroring function that allows for high-speed connection with iOS/Android/Windows devices. Unlike conventional round projectors, it uses a stand base with built-in Bluetooth 5.4 and 3D stereo HIFI speakers. You can experience the realism of three-dimensional sound on a sofa or bed while projecting onto a wall or ceiling. 610g Ultra-Lightweight & Multi-Functional Connection Ports: Achieves a 40-150 inch screen with a projection distance of 0.5-3.0m. In addition to WiFi/Bluetooth, it is equipped with HDMI and USB, allowing connection to various devices such as PCs, DVD players, tablets, USB memory, PS game consoles, speakers, and headphones. Note: This product does not have a 3.5mm earphone jack. If you want to listen to audio with earphones, please use a Bluetooth-compatible device. A unique cooling system maintains stable operation even under high loads. Adopts a long-life light source of 80,000 hours, and Japanese support is available for any questions.