The AOpen QF81 is a white LCD projector from Acer designed to bring a cinema-like experience into your home or office. It delivers a native Full HD 1080p resolution and can handle input signals up to 4K, ensuring that your movies and presentations remain sharp. With a brightness of 800 ANSI lumens and an LED light source that lasts up to 30,000 hours, you can enjoy long-term use without worrying about frequent lamp replacements. Setting up the image is straightforward thanks to the fully automatic focus and digital keystone correction, which adjusts both vertically and horizontally by up to 30 degrees to square the picture. You can project a screen diagonal ranging from 40 to 150 inches by placing the device between 1.06 and 3.99 meters from the wall. The unit is relatively compact, weighing around 2 kg and measuring 23.6 x 19.3 x 16.3 cm, making it easy to move between rooms. Connectivity is handled through a variety of ports, including HDMI 1.4, USB Type-A, and an Ethernet port for stable network access, while dual-band Wi-Fi and Bluetooth 5.2 allow for wireless integration with your devices. Sound is provided by built-in 10W stereo speakers, though a 3.5 mm mini jack is available if you prefer external audio. The package comes ready to use with an included HDMI cable.