BT 5.0 and Speaker Function Builtin Bluetooth 5.0 chip and speakers. Pair the projector with headphones, speakers, or other Bluetooth audio devices, or use the projector's own speakers for a cinemalike audiovisual experience anytime. Wide Application and Connectivity Ports: HDMI, USB, and 3.5 mm headphone jack. Note: HDMI cable is not included and must be purchased separately. Compatibility: TV Sticks/Boxes, game consoles, PCs, smartphones, tablets, laptops, DVD players, USB sticks, and more. Ideal uses: suitable for home theatre, parties, work, and other scenarios. HD Projection Display Projection size: 40–130 inches with an projection distance of 5.51 feet. Image quality: supports 4K/1080P content; automatic horizontal keystone correction for the screen position. Technology: advanced LCD screen with 1080Plevel detail and color reproduction for clear visuals. Builtin Apps and 180° Rotatable Stand Android OS: builtin Android system, no external devices needed to download and run apps for a customized experience. Stand: 180° rotatable stand allows projection at various angles, including ceilings, enabling flexible placement and mounting options. Use scenarios Home theatre and movie nights with integrated audio or Bluetoothconnected speakers. Parties or social gatherings where quick setup and wireless audio streaming are beneficial. Work or travel use for presentations, media playback, or mobile device compatibility without needing extra equipment.