Optical parameters Projection technology: DLP display Display chip: TI 0.3 inch DMD Brightness: 360 ANSI lumens Contrast ratio 600:1 Uniform illumination: 90% Color gamut: 90% NTSC Resolution (dpi): 1920*1080 Light source type: 3-color R/G/B LED light source Lamp life: >30000 hours Projection parameter Zoom method: electric focus Projection ratio: 0.39:1 Projection distance: 0 .2M-2M Lens shift: 149% Projection size: 10-120 inches (diagonal) Screen ratio: 16:9 (original) / 4:3 Keystone correction: 4-way keystone correction (2D only) + automatic vertical keystone correction HDMI compatibility: 576i, 576p, 480i, 480p, 720i, 720p, 1080i, 1080p, 4K. 3D formats compatibility: frame encapsulation format / side by side format / top and bottom format Streaming video format compatibility: MPEG-1/2/4 1080P30fps H.265 4KP60pfs, etc. Streaming audio format compatibility: MPEG-1/2/3, etc. Streaming media image format compatibility: JPG / BMP / PNG / GIF, etc. System Requirements SOC: Mstar MSD6A648 CPU: Quad-core Cortex-A53 1.5GHz GPU: Mali 720 MP2 OS: Android 6.0 System Memory: 2GB Body Memory: 16GB WLAN: 802.11 a/b/g/ n (2.4G+5G dual frequency) Bluetooth: BT4.0 (support audio and data interaction) special function Desktop version: KingOS3.0 (CIBN resource) Network video: Office software: Word, Excel , ppt, pdf Multi-screen interaction: Android, IOS, Windows 3D video playback: 3D SBS, 3D TNB, Blu-ray (support 3D to 2D) Interactive screen saver: Bluetooth speaker mode: TDB System upgrade: network upgrade / local upgrade HDMI input interface: HDMI-2.0*1 USB HOST: USB 2.0*2 Other: Ethernet interface Earphone output interface: 3.5mm stereo earphone* 1 (compatible with S / PDIF output) Other parameters Installation method: front projection, rear projection, lifting by rear projection, lifting by front projection Product size: 212*168*50mm Weight (kg): 0.7kg