Models:Style A- Red Light/BlueLight (Optional) 18.9 Inch LED Digital Wall Clock Large Jumbo Digits with Calendar Temperature Display Desk Clock Feature: 1.18.9" Extra-large Display: On this 18.9" big LED display, large jumbo digits are very high-contrast and bright, which are clear and recognizable. 2.12/24 Hour Mode: Press "UP" button to switch between these two time display formats. 3.Multifunctional: The LED wall clock displays calendar, indoor temperature, and day of the week along the bottom. 4.Memory Function: AC powered (external adaptor included). The clock keeps the settings in case of a power failure. .