Power supplydc 5v battery working time hours72 72 battery capacity500mah languagesenglish whats in the boxac adapter av cable receiver camera user manual english minimum illumination lux0 operate temperature 10 50 storage temperature 20 transmission frequency24ghz unobstructed effective rangem50 tft receiver monitorinch20 camera type13 inch cmos 380 tv line night vision camerayes two way lntercomyes display resolution320 x 240 built in speaker