Wire-free via WiFi.Based on 2.4G WiFi, without cable hassles.Put It Anywhere.100% wire-free means you can install or move it anywhere within the WiFi range.Rechargeable Battery Pack.800mAH battery with long standby timeNight Vision.With advanced starlight technology 480P cmos sensor, no additional lighting infrastructure is required.Real-time View Anytime Anywhere.Aiwit App allows you to enjoy the peace of mind comes from knowing your home is safe and secure,Guests will be able to make video voice calls and take short videos. The owner will not need to open the door to know the informationEncrypted Cloud .Save the recorded videos in encrypted cloud, never lose a file.( Cloud is not free ,Not free)Two-way Audio.Listen and speak to your visitor in .Ultra Wide-angle lens.With wider view, cover corner, inside or out.Low Battery Notification. you when battery level drops to 10% so you can charge it in time.: Z30CCD: 1/2.7 inch 480p scan CMOS sensorLens/ Angle: 2.6mm @F2.0/120Video coding: 480P/30fpsInput: 1 channel -in - 48dB microphoneOutput: -in speaker (8 ohm 1 w)Wireless network: 802.11b/g: -in 800 mah battery consumption: Standby current 200 u A Colour:blackMaterial:plasticThe factory batch is different, if there is a slight difference in appearance, it has no effect on the productPackage Contents:1 x Only the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.