Always more colors and details with the Samsung 4K TV UE55NU7405. 

Equipped with the UHD Dimming technology that features the LEDs around the screen, they illuminate a photoconductive plate that directs the light towards the slab. This technology is able to fine-tune the contrasts and details on each area of ​​the screen which allows to optimize images extremely fine and precise. 
Picture
Discover this brand new technology: the 4K HDR! Discover even more detail in shadows or bright areas and brighter colors for breathtaking realism. 
4K or Ultra High Definition (Quad Full HD) technology has a resolution of approximately 8 million pixels (3840 x 2160 pixels), four times more than High Definition. This precision makes the image sharper, more realistic and gives an impression of immersion. 
The Image Quality Index (PQI) 1700 improves the fluidity of the moving image and smooths the jerks of scrolling text. 
Contrasting images and enhanced colors 
Contrast Enhancer technology maximizes depth and enhances contrast with deeper black and sparkling whites. Moreover, the HDR gives rise to an incredible contrast.
Sound characteristics
With a sound power of 20 Watts developed by the speakers, the sound quality will be up to your expectations, the sound is managed by Dolby Digital Plus decoders.
The DTS decoder has a lower compression system than the Dolby Digital Plus decoder. The sound quality is therefore much closer to the original signal.
TV as connected as the computer ...
Connected TV (Smart TV): By Ethernet or wireless cable thanks to Wifi, connected TV provides access to a wide variety of content from the 
internet: video on demand, streaming games (Gamefly), catch-up TV , sharing photos or videos, applications formatted for TV (games and applications catalog), community sites, videoconferencing.
These features and their number may vary from model to model, depending on agreements between content publishers and the TV manufacturer. At any time, the manufacturer can modify the applications and connected services that your connected TV offers.
Features
The TV includes the Anynet + (HDMI CEC) function to control all your devices with a single remote control, automatic channel search, timer for TV off, teletext, subtitle management.
This TV also has Fransat compatibility, giving you access to free DTT and HDTV channels, and multiroom compatibility for listening to your TV programs in any room of your home by connecting compatible speakers to the Samsung multiroom system via the SoundShare feature. This feature gives you access to the wireless connection of a home theater, sound bar, or other audio device compatible with the Samsung audio system. 
Share ... The ConnectShare feature allows sharing, by playing files (photos, audio or video) on your USB drive, directly on the screen of your TV. But you can also, through Miracast technology, share files on your mobile device to your TV screen or vice versa.
Sport mode optimizes your immersion when you watch sports programs by performing an automatic setting both in terms of colors and the level of sound quality.
Connectors
The UE55NU7405 consists of 3 HDMI sockets, 2 USB ports with PVR function, 1 Ethernet LAN port and 1 optical digital audio output, allowing you easy connections of your different devices: game console, home theater, Blu-Ray player, peripheral storage and USB keys.
The PVR function that can be used from the USB port allows the recording of your programs on a USB stick or on an external hard disk. The recorder function allows you to record one program and watch another at the same time.