QBell Technology QB.19F-4 DVI. Display diagonal: 482.6 mm (19 "), Response time: 5 ms, Display brightness: 300 cd/m². Number of loudspeakers: 2 pcs, RMS rated power: 4 W. Input voltage: 100 - 240 V, Input frequency: 50/60 Hz, Power consumption (standby): 0.7 W. EPEAT compliance: Silver, Certification: CE, TCO, RoHS