Projection technology: American Ti DLP technology Display chip: Ti 0.33 WXGA DMD (with off-axis lighting machine) >100% Lamp brightness: 380ANSI Lamp type: German OSRAM RGB LED lamp brightness uniformity: >90% FOFO contrast: 3000:1 Resolution: 1280X720 3D: support 3D function (DLP-LINK) Throw ratio: 1 meter: 39 inch Projection size range: 30 inch-300 inches Projection distance: 1-6 meters Screen width ratio: 4:3/16:9/16:10 Keystone correction: support automatic and manual Projection method: front projection, rear projection, ceiling projection Material : ABS plastic + plating + metal Focusing method: electric focusing Built-in speaker: 8 ohm 5W*2 Sound effect: support Dolby sound effect Processor: MST6A648 4K H.265/VP9 4K solution * 2K/60HZ Frequency: 64-bit CPU: Contex A53 dual-core GPU: Mali-450mp4 Cache: 2GB of DDR3 Memory: 32GB eMMC Operation System: Android 6.0 Bluetooth: BT 4.0 (can be connected with Bluetooth speakers, mouse, gamepad) WIFI: 2.4G/5G dual-band WiFi Remote control: remote control standard infrared, support USB 2.4G external wireless remote control and mouse Input power: 19V-2.1A DC Input support: USB, IR Storage expansion: support TF card and SSD drive USB: USB 2.0 HOST*1 USB 2.0 HOST*1 TF card: maximum support 32G HDMI: support HDMI 2.0 input USB: support U disk, mouse, keyboard access Output headphone: audio output, 3.5mm connector (headphone or audio can be connected) DC input: power adapter: DC 19V 2.1A Total machine power consumption: 40W Power performance: AC100-240V, 50 / 60Hz Overall product size: 173*173*40mm Whole machine package size: 215*215*100mm Bare metal net weight Weight: 680g Whole machine with weight/packing set: 1.53kg