Elegant design and brilliant graphics: Philips 275E1S Features: picture diagonal: 68,6 cm / 27 inch Resolution: QHD 2560 x 1440 pixels Aspect ratio: 16:9 Response time: 4 ms brightness: 250 cd/m² Contrast: 1,000:1 Viewing angle horizontal/vertical: 178°/178 Sampling frequency: 54 to 84 kHz (H)/49 to 75 Hz (V) AMD FreeSync technology FlickerFree Technology LowBlue mode SmartImage play mode Signal input: VGA (analog), HDMI (digital, HDCP), DisplayPort connector x 1 Audio input/output: Audio output