This Braun weather station measures 3.5" x 5.2" x 1.9", the accompanying sensor is 2.4" sq x 1". The clock has a superior reverse LCD display and has two mode buttons for a unique user customization. The user can press the mode buttons to toggle between time, alarm time, indoor and outdoor temperature and humidity at both the middle and bottom levels of the display. The top of the display is fixed and shows an animated weather forecast for the next 12 -24 hours. An outdoor sensor is included which links directly to the main weather station. The outdoor sensor has its own display that shows the outdoor temperature and humidity. The clock has a memory function which shows the maximum and minimum temperature records for the past 24 hours. The clock has a quick set function for easy use and can be set to 12 or 24 hour mode. The radio controlled function can be switched off and the clock can be manually set for use in those countries where the radio controlled signal is not picked up. The weather station and sensor connect via 433 MHz technology. This frequency is restricted in certain countries: Please check list of compatible countries when purchasing product.