From the Amazon page for the Honeywell thermostat:

"Offering the ability to program each day differently and to customize temperatures for four periods per day, this thermostat makes it easy to heat or cool your home for optimum comfort. It features exclusive Honeywell Smart Response Technology and a feature that enables auto changes from heating to cooling, which continually adjust the pre-heating or cooling of your home for effective results and precise comfort control within one-degree F of your desired temperature. A straightforward, green backlit display and easy-to-use touchscreen keep operation and programming simple. And this display is easy to read, even in dimly lit rooms and hallways."

and

"This thermostat delivers permanent day and time settings that are even maintained during power outages, and it offers the option of automatically adjusting for Daylight Savings Time as well as a filter-change reminder function that can help you keep your heating-cooling system operating at its best.

This thermostat is compatible with a broad range of 24-volt heating and air-conditioning systems, including both single-stage and multi-stage heating and cooling systems, heat pumps with and without auxiliary (back-up) heat, gas fireplaces, and heating-only or cooling-only systems. It is not compatible with electric baseboard heat (120 to 240 volts). 

The thermostat is backed by a one-year limited warranty."