1.46" Ultra Narrow bezel LCD DID video wall 2.3x4 system with 12 pcs splicing player box 3.Splicing seam:2 ... Response time 5ms Viewing angle (H/V):180°/180° System of signal PAL/NTSC Auto change Video signal 1.0vp ... Non-profit Organizations: Telecommunications, post offices, Hospital information center , Education system; Public Places: subway, airports, stations, gas stations, toll stations, ...