Amazon THUSTAND  
THUSTAR 8MP Document Camera & Webcam 4K with Dual Microphones, USB Visualiser A3-Size, 3-Level LED Lights, Image Invert Function, Fold, for Live Demo, Distance Education -Windows, macOS and Chrome OS
USB Document Camera with adjustable image reversal: The camera that can manually adjust image reversal. In video chat or image output, the image can be freely adjusted left/right and up/down; you can also manually adjust the reversed image that appears in the device to a normal image
8MP/2448P document camera with 30fps: it output ultra-high-definition images and videos live transmission, up to 2448P megapixels. Press the focus button once to automatically focus the document camera once. Moving the object under the lens, the camera will not be arbitrary automatic focus and the image dance. Macro can capture objects as close as 3.94"
Document Camera with Adjustable Image Brightness : the usb camera has brightness (plus) and brightness (minus) buttons, you can manually adjust the image brightness with 10 degree, to make sure that you can get the clear image. Camera comes with 14 ring lamp beads, 3 levels of brightness adjustable, which can eliminate shooting problems under difficult lighting conditions, allowing you to capture objects in dark and bright environments, and can also achieve Selfie fill-in function
Foldable Document Camera for teachers/classroom: embedded design, occupies a small space after folding, easy to carry; Multi-joint support with multi-angle rotate freely usb camera can capture 2D and 3D objects better and shooting high-definition images and videos. Maximum covering area: 16.5" x 116" in. (A3 paper)
USB Camera with highly compatible, plug-and-play : applicable to Windows PCS, Macs, and Chromebooks, automatically installs drivers when the device is plugged in, compatible with Tiktok, Google Meet, Skyp-Microsoft Teams, Zoom; it has built-in dual silicon microphones, which can reduce noise and improve sound quality
THUSTAR 8MP Document Camera & Webcam 4K with Dual Microphones, USB Visualiser A3
Amazon Optoma  
Optoma ML750ST Ultra-Compact 700 Lumen WXGA Short Throw LED Projector with MHL Enabled HDMI Port
Compact size and carry case: weighing under one pound, This Palm sized mini projector is perfect for the road warrior; it fits easily in a briefcase or backpack, or in the carry case, included in the box
Short throw projection: easily project in tighter spaces; the ML750ST short throw lens allows users to place the projector less than 6 feet away from the screen and still enjoy a large 100" Image
LED light source: enjoy up to 20, 000 hours of life with its brilliant LED lamp, An average of 5 hours a day for 10 plus years; LED lamps last 7 times longer than traditional lamps which require more replacements
Easy set-up with auto Keystone: ideal for space constrained environments, The ML750ST can simply be placed and the auto Keystone sensor will straighten the image on the screen with no hassle
Brightness: enjoy 700 lumens of brightness in lower lit meeting rooms, conference rooms, training rooms, classrooms and more
Go PC-free: a PC-free media player, image viewer and document reader enable users to display Office documents, PDFs and images from USB storage devices or micro SD card
Screen mirroring: share content from your mobile device, notebook, or gaming console with the integrated HD cast Pro for wireless screen mirroring via HDMI input; requires WUSB adapter, sold separately
Incredible picture quality: experience razor sharp images and videos with incredible colors and brightness with WXGA (1280 x 800) resolution and 20, 000: 1 contrast ratio
Optoma ML750ST Ultra-Compact 700 Lumen WXGA Short Throw LED Projector with MHL E
Amazon Optoma  
Optoma X600 XGA Projector for Business with High Brightness 6, 000 Lumens, Crestron Roomview For Network Control, Keystone Correction, Zoom, Silver
High brightness: enjoy an incredible 6, 000 lumens of brightness in well lit meeting rooms, conference rooms, training rooms, classrooms and more
Extensive connectivity options: The X600 features an impressive array of connectivity options including DisplayPort, two HDMI, two VGA, VGA out, S-VIDEO, composite video, 12V trigger, forest-232c, and RJ45
Network control with Crestron room view: set up complete network control and management of up to 250 projectors, a perfect solution for large installations in business and educational environments
Forest-232 control: Take control of the projector using hex or ASCII commands via forest-232 cable
Easy set-up: vertical keystone correction +/- 15 degrees allows the projector to be off-center without having to elevate it to project the image onto the screen, resulting in an easy, more flexible image set-up; a 1. 1x zoom enables flexible placement in any environment
Integrated speaker: a 10-watt built-in speaker enhances presentations with sound and simplifies the set-up without the need for external speakers; loud enough for medium to large classrooms and meeting rooms
Incredible picture quality: experience presentations with vibrant colors and sharp, clear text and graphics; XGA resolution (1024 x 768) and 10, 000: 1 contrast ratio
Full 3D compatibility: display true 3D content from almost any 3D source, including 3D Blu-ray Disc players, 3D broadcasting, and the latest-generation game consoles. Support for 144Hz rapid-refresh rate provides ultra-smooth flicker-free images. 3D glasses required.
Throw Ratio : 1.8 - 2.1:1
Optoma X600 XGA Projector for Business with High Brightness 6, 000 Lumens, Crest
Amazon Epson  
Epson Home Cinema 5050UB 4K PRO-UHD 3-Chip Projector with HDR,White
4K PRO-UHD (1) Projection Technology – A new type of 4K home theater experience utilizing advanced processing for resolution enhancement, color and image processing – resulting in an exceptional 4K home theater experience
True 3-Chip Projector Design – Advanced 3LCD technology displays 100% of the RGB color signal for every frame. This allows for an outstanding color gamut while maintaining excellent brightness, without any “rainbowing” or “color brightness” issues some may see with other projector technologies
Pixel-Shift Processor – Advanced pixel-shifting processor precisely controls three high-definition LCD chips to parallel process millions of pixels of information. This new type of resolution enhancement technology (1) results in an exceptionally sharp 4K visual experience
HDR Processor – Full 10-bit HDR (2) color processing accepting 100% of the HDR source information to faithfully reproduce HDR content for an exceptional visual performance
Digital Imaging Processor – Real-time 12-bit analog-to-digital video processing for smooth tonal transitions, while helping to eliminate banding, blocking and other compression artifacts from the final visual performance. This powerful processor faithfully reproduces the source material the way it was intended to be shown
Outstanding Brightness – Capable of displaying 4K content at an incredible 2,600 lumens for both color and white brightness (3). This not only provides for a wider performance envelope but allows for an exceptional HDR performance
Epson UltraBlack Technology – Epson created a Proprietary Compensation Filter designed to control the polarization of light itself. This allows Epson to suppress any stray light within the signal, producing an outstanding Dynamic Contrast ratio of 1,000,000:1
Precision HDR (2) Adjustment – Real-time HDR curve adjustment allowing for 16-steps of control to fine-tune the HDR performance – regardless of the conten
Epson Home Cinema 5050UB 4K PRO-UHD 3-Chip Projector with HDR,White 4K PRO-UHD (
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