Open box, not used. It visually is a mirror. It looks black in one pic but it's not, it's mirrored like the main pic.
Product details
Control from anywhere: With the Google Home app, you can control your smart thermostat from wherever you are - whether you’re on the couch or away from home. Heating and cooling system care: Your smart thermostat can monitor your heating and cooling system and alert you if something doesn’t seem right.2 It can also send helpful reminders, like when it’s time to replace your filter.
ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable
Smart thermostat with HVAC monitoring, which looks out for your heating and cooling systems; sends an alert if something doesn't seem right, along with helpful reminders to make maintenance easier2
Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet1
Savings Finder looks for more ways your thermostat can help you save, and suggests tweaks to your schedule in the app; check with your energy provider to learn more about rebates and more ways to save on a Nest thermostat
Nest Thermostat turns itself down when you leave, so you don't waste energy heating or cooling an empty home
Programmable thermostat that lets you create an energy efficient schedule in the Google Home app on your Android or iPhone
The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled, and heat pump systems, you'll need a C wire or other compatible power accessory.
Please refer to the compatibility chart before ordering the item: https://store.google.com/intl/en/widget/compatibility/thermostat/