（1) The 12-digit SN number is usually on the bottom of your projector;
（2) Or you can find it in system info: System Settings > System Information > Serial Number
For a more convenient and better user experience, we have a global version for overseas customers. This system is completely different from the Chinese version. To avoid any possible compatibility issues, booting issues or system crashes, please don’t switch the firmware between these two versions. XGIMI is not liable for the above issues.
The projection ratio is the ratio of the distance between the lens and the screen and the screen size; when the distance between the lens and the screen is the same, the smaller the projection ratio, the larger the projection screen. 254 cm to 3 meters. H2: 1.2: 1 (30-300 ”) MoGo Series: 1.2: 1 (30-100 + ”), Halo: 1.2: 1 (30-300”)