Feature: 1. 4.3‑inch High definition LCD screen 420TVL display,480 x 234 resolution ensure clear and high quality image display. 2. Built‑in lithium electricity and can be used while charging, reduce the trouble of replacing the battery. 3. Digital RF modulation with frequency hopping function (automatically switching RF channels) Dynamic selection of clear channels to avoid interference from other 2.4GHz devices. 4. Data protection (support user ID identification) Hypnotic music playback and with temperature display function Two‑way intercom, support data encryption. 5. Night vision function (effective rang 5m / 16.4ft), receiver and camera have built‑in microphones and speakers; Open space transmission range up to 300m / 984.3ft. Specification: Item Type: Baby Monitor Material: Plastic + Electronic components Operating Frequency Range: 2400MHz-2483.5MHz Transmitted Power: 17 dBmmax Monitor Sensitivity: -88dBm Spread Spectrum Type TX: FHSS S Modulation Type: GFS K Data Rate: 3MBP Open space transmission range up to 300m / 984.3ft Operating Temperature Range: 0 ℃-+ 40 ℃ Working Humidity Range: 85%RH Environmental Rating: For indoor use only Monitor Battery: 3.7V lithium polymer (included) Monitor Capacity: 5200mAh. Package List: 1 x Camera 1 x Display2 x Plug 1 x Manual