Proyector Samsung 550L LED FHD USB HDMI (SP-LSP3BLAXXE)

The different screen sizes which the device can work with.

The difference in light intensity between the brightest white and the darkest black.

The aspect ratio is the ratio of the width of an image to its height. The native aspect ratio is the one which the projector/display is particularly designed for. Images shown in native aspect ratio will utilize the entire resolution of the display and achieve maximum brightness. Images shown in other than native aspect ratio will always have less resolution and less brightness than images shown in native aspect ratio.

Full High Definition (HD) means that a display supports a resolution of 1920 x 1080 pixel, and has a digital TV connection.

The device can be used with 3D technology.

Number of USB 3.0 (3.1 Gen 1) ports with Type-C connector. USB 3.0 (3.1 Gen 1) is USB interface version which supports transfer rate up to 5 Gbit/s (SuperSpeed). USB Type-C connector has symmetrical design architecture and compatible with Thunderbolt 3 interface.

The number of sockets (ports) for HDMI connections. HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transferring uncompressed video data and compressed/uncompressed digital audio data from a HDMI-compliant device ("the source device") to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for existing analog video standards.

Digital Visual Interface (DVI) is a video display interface to connect a video source to a display device, such as a computer monitor.

Smart TV features access to a large number of channels that offer TV programs, movies, and music without the need to connect a TV antenna or subscribe to a cable/satellite service. Some smart TVs provide web browsing, gaming, and access to compatible media content stored on computers.

An Ethernet LAN (Local Area Network) interface is present, for a wired conection via a cable.

Popular technology that allows an electronic device to exchange data or connect to the internet wirelessly using radio waves.

The type of wireless local area network (LAN). It can be ad-hoc, where units in a network communicate peer-to-peer, or Infrastructure, where units communicate with each other via an access point A LAN interconnects computers in a small area e.g. home, school or office.

Bluetooth is a low-power radio technology developed to replace the cables and wires currently used to link or connect electronic devices such as personal computers, printers, and a wide variety of handheld devices including mobile phones. Because it uses radio-wave connectivity, a Bluetooth-enabled device has a constant, established connection to whatever browser it uses. This saves the user the trouble of logging on to check for emails or news updates, for example.

The type of bluetooth technology in the product e.g. Bluetooth Smart (v4.0).

The device includes a card reader e.g. a card reader in the disk bay of a computer or thin client to permit log-on using smart/pin cards.

The amplitude level of the undesired background noise, usually measured in decibels (db).

Type of operating system on a device e.g. IOS on Apple devices, Android for mobile devices.