Spec: Item Type: Video Doorbell Material: ABS Weight: Approx. 195g / 6.9oz Resolution: 1920 x 1080/1280 x 720 (Matching) Number of Infrared Lights: 6 NightDistance: 5-10 Meters Connection Method: Mobile APP Storage:Based Doorbell Camera Battery Type: Lithium Ion Battery Battery Model: 2 x Batteries (Doorbell Does Not Include Batteries) Charging Interface: Micro USB APP Name: for Version: 2.4GHZ Receiver Interface: USB How to Use: 1. Insert the batteries into the doorbell and power it on. 2. Scan the QR code to download for App. 3. Click on Add Device or Plus in the app and select Smart Doorbell. Follow the instructions on the app to operate the device. Package List: 1 x Video Doorbell 1 x Receiver 2 x Expansion Screws 2 x Screws 1 x Adhesive 1 x Charging Cable 1 x User Manual