Specification The body is compact with a size of approximately 113 123 5 159mm The front upper part uses a 3 piece high transparency glass lens The back interface includes USB 1 HD 1 and 3 5mm audio output The projector itself comes with an intelligent system If an external laptop or game console is needed the HD interface will be used Sometimes if a PPT presentation is needed a USB flash drive can also be directly inserted These interfaces can meet most daily usage needs Support autofocus omnidirectional automatic trapezoidal correction automatic obstacle avoidance and automatic screen entry functions