The Honeywell Wi-Fi 7-Day Programmable Thermostat (RTH6580WF) is a rectangular-shaped thermostat that runs on batteries. It features a digital display and programmable settings for up to 7 days. This thermostat is compatible with universal systems and is designed for surface-mounted installation. With its user-friendly interface and advanced features, it offers homeowners a convenient and energy-efficient way to control their heating and cooling systems.