The internal microphone supports two-way audio Supports micro SD cards up to 128 GB Supports 2.4G HZ Wifi (Don't support 5G HZ WiFi) Supports mobile video surveillance (iOS, Android) Supports motion detection recording and push message to App Supports auto tracking and watch postition setting, camera would back to the stable position automatic Support recording, and playback online from the app Product Name: 30w WiFi webcam Cpu:xr872at Number of cores: single core Memory: 416kb SRA-M + 4-m PSRAM Flash:4MB TF Card: up to 128GB Operating system: RTOS Number of simultaneous access users: 4 Input: built in microphone Main frequency: 384mhz Power consumption: 300mAh (infrared on); 150mah (without infrared) Infrared irradiation distance: 3-5M Working temperature and humidity: - 10 ℃ 50 ℃, humidity less than 95% (no condensation) Sensor chip: gc0308 Focal length: 2m Angle: 50 degrees Display resolution: 640x480p (30W) Day night conversion mode: day night switching Digital noise reduction: 2D digital noise reduction Video compression standard: MJPEG Video compression code stream: 640x480p 12 frames Audio compression standard: g711u Audio transmission: recording Storage interface: Micro SD card (up to 128GB) Power interface: Micro USB interface Wireless standard: IEEE802 11b/g/n Frequency range: 2.4 GHz 2.4835 GHz Channel bandwidth: 20MHz Security: 64 / 128 bit WEP, WPA / WPA2, wpa-psk / wpa2-psk Product size:9x5.5cm/3.54x2.16 inch Package size:10.1x7.1x7.1cm/3.97x2.79x2.79 inch Gross weight:122g/0.26 lb 1 x Host 1 x Power line 1 x Rubber pad 1 x Use manual