Atomic time & date with manual setting; Wirelessly monitors indoor/outdoor temperature; Automatic focus of projection; Automatically updates for Daylight Saving Time; Perpetual calendar; Time zone setting; Time alarm with snooze; Temperature range: 14deg F-99.9deg F indoor, -39.8deg F-139.8deg F outdoor; Includes AC power adapter; Projection alarm requires 2 AA batteries for backup & sensor requires 2 AA batteries;