Large Color Screen:Large color screen, which displays more information you need: time/calendar/week/comfort index/pressure/tide/moon phase/indoor and outdoor temperature and humidity/weather forecast/trend forecast/local sunrise and sunset/and more. Wireless Outdoor Sensor:Wall mount or table stand, 433.92MHz RF transmission frequency, 60 meters transmission range in an open area. Up to 3 wireless outdoor sensors can be connected (package includes 1 sensor) Switchable Format:Temperature alternately in or. Pressure alternately in inHg or hPa/mb. Time in 12/24H format. Dual alarms with snooze function (OFF or 5~60min) Adjustable Brightness:5-level brightness backlight (highlow 4 levels, closed) with night mode. Only when the power supply is working can the backlight be turned on continuously. When powered by battery, the backlight will light up for 15 seconds.