... CE, CCC, FCC, R&NTTE 7. Ultrashort built-in antenna design, fashionable and attractive shape 8. Super-infrared night vision ... : Parameter Working current 150mA SNR Voice>55dBIndoor Monitor1) Wireless frequency 2.4GHz2) Power 5V battery rechargeable3) Batterywork100h standby 5hours ... steel Accessory screw, rechargeable battery,manual, power adapter 2.4G Digital wireless intercom video door phone