P is Nothing but its Pixel, which means a gap between the two LED lamps. eg: if P10 means 10mm gap between the Lamps which Produce normal Resolution, In P4 - LED lamps have only 4mm gap thus produce a high-resolution video (HD). 

Yes, You can change any content like Text, border design, image, video, time, animation, and all with your Mobile phone or Pc. 

உங்கள் போன்,கணினி மூலமாகவே எளிதாக அனைத்தையும் மாற்றிக்கொள்ள முடியும் .

It varies on Operating conditions like Temperature, continuous run, Brightness used, and mainly Quality of materials. in our company uses only high-quality materials thus Approximately Long Last for 50000 Hours of usage. 

Yes, you can use All Languages, with different font styles also. உங்கள் விருபத்திற்கு ஏற்றவாறு அனைத்து மொழிகளையும் பல டிசைன் களில் பயன்படுத்த முடியும்.

Yes, You can use in day & night.