hito 9.5&rdquo; Mains Powered Large Digital Desk Clock Wall Auto Dimmer 7:00pm-7:00am Dual Alarm DST Calendar Date Day Indoor Temperature Humidity Modern Decorative for Bedroom, Kitchen, Office (Black) MAINS POWERED: hito white-numerals wall clock works with the adapter included. You can use it upon its arrival. Clock size: 9.5 x6.5 x1.8 inch. AUTO LIGHT DIMMER: hito clock glows day and night. It dims automatically at 7:00pm---7:00am. DST ON/OFF OPTION: The DST ON function saves you setting time repeatedly when Daylight Saving Time starts/ends. DST OFF for Arizona. DUAL ALARM: You can set two different alarms as needed. Alarm status also shows on the display for easy check. INDOOR TEMP HUMIDITY: This clock also displays indoor temperature (Fahrenheit/ Celsius) and indoor humidity.