APP: 163eye/ YOOSEE Image Sensor: 1/4′′ High-Definition CMOS 1 Million Pixel CMOS Sensor Audio input and output: Built-in 38DB microphone; Output: Built-in 8Ω 2W speaker built-in lens: 3.6MM Infrared night vision effect: sensor switch through the photosensitive resistance, LED night vision distance is 10 meters (IR-CUT automatic switching) Local storage: support external 128GB Micro SD card, support for 24-hour video or alarm recording Wifi: Supports IEEE 802.11b/g/n Alarm Action: Ring Alarm/Email/Mobile Client Push System Interface: 1 USB Interface 1 TF Interface