Alexa Doorbell: Smart smartphone doorbell compatible with Alexa/Google Assistant via the Smart Life app to enable announcements and two-way talk for convenient home monitoring. Smart doorbell suitable for Google Home, wireless doorbell with camera suitable for Alexa, wireless doorbell with camera Smart Wireless Doorbell with Battery: Long-lasting 5200mAh Rechargeable Battery: Smart wireless video doorbell built-in 2 x 2600mAh rechargeable batteries. The battery of the video doorbell we provide needs about 5 hours for a full charge. After one charge, you can use the outdoor doorbell for up to 60 days. Standby mode for up to 180 days. Doorbell Camera Compatible with Alexa, Wireless Doorbell Compatible with Google Home Smart Security Video Doorbell with Camera: Ultra-clear infrared night vision video doorbell, the security video doorbell can automatically switch day and night modes according to the light environment. The WiFi infrared camera provides a visible range of 16ft in the dark,