Smart Weather Clock WiFi Wireless Digital Weather Clock for Temperature Humidity Barometric Pressure Wind and Frost Alarms Time Date Weather 100‑240V EU Plug Item Type: Smart Weather Clock Material: ABS Weight: Approx. 668g/23.6oz Host Battery: 2 x AA Batteries (Not Included) Outdoor Sensor Battery: 2 x AA Batteries (Not Included) Functions: Day's Weather Forecast and Following 4 Days Weather Forecast, Indoor Outdoor Temperature and Humidity Data Display, Barometric Pressure, Wind Speed and Frost Alert, Time, Date, Weather Data, Etc. Battery:Battery Will Only Be Used for 15 Seconds When the Backlight Is On, No Network Data Will Be Downloaded from the Battery Product, It Is Recommended e the Battery as a Backup Power Source. Batteries Are Recommended as a Backup Power Source. Power Adapter: 4 Levels of Brightness Can Be Adjusted, The Backlight Can Be Always On. The Weather Clock Can Be Downloaded Normally.