Resolution NoteThe projector provides native 1080P resolution, It only supports 4K video decoding.Wind Noise NoteAccording to international measurement standards, fan noise measured at 1 meter from the projector is 30dB. Please do not measure decibels directly against the projector. Brightness NoteWe measure brightness strictly using the official ANSI (American National Standards Institute) method. The projection brightness is 300 ANSI, equivalent to the falsely advertised 1800 ANSI brightness of other products.The projection effect of this product is not significant in daylight or bright light environments. For the best viewing experience, please use it in a low-light environment. Screen mirroring limitationsDue to HDCP (High-bandwidth Digital Content Protection) copyright restrictions, users will only receive sound but no picture when directly mirroring Netflix or Disney+ from their phones. It is recommended to use the projector's built-in apps such as Netflix or Disney+.Dust filter NotePlease clean the dust filter regularly to prevent dust from clogging the fan, which can cause overheating problems, screen burn-in, and dead pixels.Transcreen NoteApple and SAMSUNG phone users can download transcreen app from the app store. After scanning and connecting, you can control the projector to simultaneously cast the software screen with one click solving screen mirroring compatibility issues, without needing to use the Micrast or AirPlay.Remote NoteEnsure the remote is directly connected to the IR receiver. Please ensure you have two AAA batteries installed in the remote control. (2*AAA Batteries Not Included)Function NotesThe keystone correction function only supports vertical automatic keystone correction; horizontal keystone correction and auto focus are not supported. Manual adjustment via remote control or mobile phone is required. Compatible with Mutiple Devices IP5X Dustproof Lens >50,000 Hours LED life 2-Year Advanced Exchange Service Lightweight Design Usage Notes