HB6256 5.0 Inch Video Baby Monitor with Remote Pan and Tilt Function Features Wireless Technology: 2.4GHz FHSS (Frequency- Hopping Spread Spectrum) Encription 5.0 inch IPS LCD Colour Screen (full view angle: Up 86 degree; Down 86 degree; Left 86 degree; Right 86 degree) Remote Pan-Tilt and Zoom Rechargeable Li-thium Battery (Parent Unit 4000mA) Stand-by Time up to 30 Hours High Sensitivity Microphone LED Sound Level Indicator Support up to 4 Camera Units Two-way Communication Alarm Function Lullaby Playing ECO Mode Infrared Night Vision Volume Setting Brightness Setting Room Temperature Display Up to 1000ft (300m) Range at Open Area 8 Languages: English(USA) English(UK) Spanish Portuguese German Italy French Netherlands AC Adapter with FCC UL CE GS Certificate Product Comply with FCC CE RoHS REACH etc The Package is Environmentally Friendly.