Video doorbell - As soon as you ring the doorbell, you can be Checkyour phone to see who's visiting .t's to open door. Two-Way Voice Talk. IR Night Vision - Not lose any details even in darlness. Very large range signal.Indoor Distance 30-50M, Open Distance 100-150M. A wide Angle gives a clearer view, 75° wide Angle. The captured image is uploaded to the cloud for saving - When a visitor rings the doorbell, it can quickly snap a picture of the visitor and save the record Tothe clouds. Visit information can be viewed at anytime through the mobile APP, both safe and easy to worry about. Free volume adjustment - Can freely adjust the volume, suitable for baby sleep, people who go home late at night, normal day Regular life, people with hearing impairment can be applied. Extra long standby - 800mAh large capacity battery, Iowpower doorbell. Itcan be used forabout3 months after fully . Due to different product batches, the appearance , which does not affect the use. Colour:A:Black Material:Plastic Package Contents: 1 * WiFi Doorbell Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.