Highest Quality - Each Guteauto remote key replacement comes with complete electronics assembled with a battery and has been pre-tested to ensure functionality. Contact us before purchg if you have any questions. Package Included - 1 Pcs Car Keyless Entry Remote (Battery included). Please check OE number/FCC ID and product picture with the original one before purchase. Notice Programming - This remote and door key must be programmed and cut by a trained locksmith or dealership (consult with several locksmiths prior to programming to assure success).To add a new key, a working key fob was required. A certified locksmith or dealership must program and cut this remote. FCC ID/Part Numbers: HYQ4AA, 13506665. Frequency: 315MHz. FITMENT -for Buick Encore 2017 2018 2019 2020.