Native Resolution: 1280720P, Max Support 1080P 2K 4K decoding use HD signal. Wireless:2.4G & 5G WiFi. Operation System:Android 11.0. RAM: 1GB + ROM:8GB. CPU: Quad-core ARM Cortex-A53. GPU:Mali-G31 supports OpenGL ES3.2, Vulkan 1.1, and OpenCL2.0. Bluetooth-compatible: BT 4.1. Contrast ratio: 1500:1. Support Airplay, Miracast, Mirror screen. Projection screen size: 40-130 inches. Image File:JPG, BMP, PNG, support image scaling. 1HDMI: HDMI Input 2.0. 1USB: USB 2.0 Support USB hard disk data read. 1Earphone: Audio output, 3.5mm joint (can connect with earphone or speaker box). 1 AC input: DC 19V 3A & OTG. Power cable×1 (UK, AU, EU, AU optional). Pls note our projector can support 4K video decode, but output video highest resolution is 1280720P.