The Kelvin 7-day Programmable Thermostat with Voice Activation is a white rectangular-shaped thermostat made of plastic. It is compatible with universal systems and operates on low voltage power. With a 1.97-inch display and Wi-Fi capabilities, this thermostat offers easy control and energy savings. The programmable 7-day schedule, sensor technology for temperature readings, and auto system switching make it a convenient and efficient choice for maintaining a comfortable home environment.