Mint new in sealed box never opened. The Google Nest Smart Thermostat in Charcoal G4CVZ-US is a programmable thermostat with a 7-day schedule that allows you to easily control the temperature in your home. It features a sleek gray design and is compatible with the G4CVZ model. This thermostat is wall-mounted, has a 2.4-inch display, and can be controlled via the Nest app. It also has smart home compatibility with Google Home/Assistant and Amazon Alexa, and offers features such as Bluetooth and Wi-Fi connectivity. With its low voltage operation and auto system switching, the Google Nest Smart Thermostat is an efficient and convenient choice for maintaining optimal indoor temperatures.