ECOBEE smart thermostat with box new air conditioner eco nest please read

This is a ecobee thermostat. Never fully installed. The plastic is still on the front glass panel. All parts present except one screw. Both anchors in package. A couple of the stickers used to label Wires are missing. Otherwise an opportunity to try out this device at a fraction of its retail cost. Instruction for installation booklet included. Thank you for looking.