The Google Nest Smart Thermostat Model G4CVZ in Charcoal is a programmable thermostat that can be controlled via the Nest app or Google Home/Assistant. It features Bluetooth and Wi-Fi connectivity, making it easy to set up and monitor your home's temperature. With a sleek round shape and a wall-mounted design, this thermostat is both stylish and functional for your heating and cooling needs. Powered by AAA batteries and operating on a 24V system, the Google Nest Smart Thermostat is a reliable choice for achieving optimal home comfort.