Features:

- Auto-Schedule - No more confusing programming. Nest learns the temperatures you like and programs itself

- Nest Leaf - The Nest Leaf appears when you turn Nest to a temperature that's energy efficient. It guides you in the right direction

- Auto-Tune - Auto-Tune finds ways to automatically lower your energy bill while keeping you comfortable. It enables two Nest features: Rush Hour Rewards and Seasonal Savings

- System Match - Get the most out of your high–efficiency system. Nest turns on specific features for forced air, heat pump or radiant to help you save energy and stay comfortable

- Sunblock - In many homes the thermostat is in direct sunlight, causing it to warm up. Nest automatically adapts to direct sunlight to read and set the right temperature

- Nest will optimize itself for you and your system

Specifications:

- Diameter: 3.3" 

- Projection: 1.21"

- Weight: 0.54 lbs

- Humidity Sensing: Yes

- Humidity Control: Yes

- Operating Temperature Range: 32 to 104F ( 0 to 40C )

- Operating Altitude: 7,500 Feet

- Display Size: 2.08" Diameter

- Display Type: 24-Bit Color LCD Screen

- Display Resolution: 480 x 480