1、Projection Screen Touchable: An interactive portable projector that turns any flat surface into a 180in touchscreen tablet. 2、Screen Floating Brush Function: Clicking on the top and bottom of the screen will activate the brush function, you can write and draw marks anywhere on the screen, especially when you are giving a speech ppt or word, you can sign it at any time, which is very suitable for Small meeting office use. 3、16GB Memory: The projector has built in 16GB memory, you can install your favorite software on the projector system, games, music, and movies can all be operated through a stylus. 4、All In One Projector: Built in WiFi, Bluetooth, for Android OS and touch screen technology. It's portable so you can use the projector to stream, present and play your favorite for Android apps anywhere. 5、HD: Up to 100 ansi Luminous Flux and 1920x1080 resolution, support 4K source. Built in speakers give you more options for playing audio. Item Type: Touch Projector Product Material: ABS Remote Control Battery: AAA x 2 (Battery Not Included) Stylus Battery: Lithium 220mAh (built in) Display Technology: LCD Projection Light Source: LED Module Projection Light Source Life: More Than 30,000 Hours Center Brightness: Typical 100ANSI Luminous Flux Light Type: LED Physical Resolution: 1920 x 1080 (Support 4K Source) Projection Size: 50-180in Contrast: 1500:1 Throw Ratio: 1.35:1 Uniformity: >75% Projection Distance: 1.5m-3m Projected Aspect Ratio: 16:09 Focusing Mode: Manual Focusing Keystone: Auto Keystone (Horizontal Vertical: ±40 Degrees) Projection Mode: Front Projection Rear Projection Ceiling Projection Off Axes Function: 30% System Parameters: Same Screen: Support System: for Android 9 Solution: RK3228A; 4 Cores, A7 Cores, 1.2G Processor: Mali400 MP2 GPU Running Memory: 2GB DDR3 Internal Storage: 16GB WIFI: 2.4G 5G Bluetooth; 4.0 Basic Parameters: Video Formats: 4K HEVC H.265 MPEG-2 MPEG-4 H.264 VP8 VP9 Music Format: MPEG1 Layer3 AC3 EAC3 AAC, HEAAC WMA LPCM IMA-ADPCM MS-ADPCM Image Format: Jpg, Png, Bmp, Etc. Extended Storage: None Remote Control: Support Infrared And 2.4g Wireless Remote Control Built in Speaker: 2x3W Optical Power Consumption: 40W Standby Power Consumption: 2.5W Machine Power Consumption: 65W 1 x Projector Host 1 x Power Adapter 1 x Stylus 1 x Remote Control 1 x Usb Charging Cable 1 x Power Cord 1 x User Manual