describe: Product model: M3 Lens 0328: Angle 125 degrees Battery Model: 400 mAh, 2 months of permanent battery life Power input: 5V-2A Human body induction: optional Storage function: TF card (maximum support 64G, not included) Voice system: two-way intercom/remote prompt view by mobile phone Recording range: 5m Wireless connection: WIFI IEEE802 11b/g/n 24GHz, rf 433MHz System support: Android4 3 or above ios9.0 USB interface: MCRO-Mike 5P/DC5V-1A Product size: 106*45*24mm Specification: feature 1.400mah battery capacity. 2. Mega high-definition pixels with 125-degree wide-angle lens 3. Support the mobile phone to quickly wake up the device within 1 second. 4.2.4G Wi-Fi connection 5. High-quality two-way conversation with noise reduction function 6. Support PIR motion detection, when someone wanders at the door, immediately push notification to the mobile phone. 7. The day and night mode is automatically switched, no matter day or night, the image is clearly visible, escorting your safety and your family. 8. Support ULookaAPP. Connection and work are more stable. Package Included: 1*Smart doorbell 1*USB data cable 1*Instruction manual