If you're passionate about IT and electronics , like being up to date on technology and don't miss even the slightest details, buy Monitor Videowall Philips 55BDL4650D/00 4K Ultra HD 55" at an unbeatable price. Screen diagonal (cm): 139.7 cm 137.2 cm Plug-in product: Yes Plug type: EU socket Internal memory: 32 GB 4 GB Type: Videowall Monitor Color: Black Response time: 8 ms VESA: 40 x 40 cm Brightness: 500 cd/m2 Screen: 55" Energy class: G Resolution: 4K Ultra HD Communication: Bluetooth Wi-Fi Infrared Aspect ratio: 16:9 Links: USB RJ45 DisplayPort x 2 HDMI 2.0 Ethernet LAN RS-232C x 1 USB x 4 HDMI x 2 Resolution (px): 3840 x 2160 px Technology: LCD VA Frequency: 60 Hz 50 - 60 Hz Properties: Built-in speakers Universal Includes instructions 2 speakers English RMS power: 20W Contrast ratio: 5000:1 Input connection: DVI Interface: Ethernet Batteries included: Yes Includes: Remote control Touchscreen: No Working angle: 178º Accuracy (relative humidity): 20% - 80% AC input voltage: 100 - 240 V Mounting: VESA Compatible: VESA 400 x 400 mm