Authentic - Slightly Used - Replacement Part - NOT A COMPLETE SET - You will receive a single replacement charging case. Thoroughly tested and guaranteed to operate as intended by the manufacturer. Will have signs of use. Thoroughly tested and guaranteed to operate as intended by the manufacturer. Serial numbers are recorded with each sale. Any returns will have to have matching serial numbers to receive refund. No exemptions. Return Policy: Our 100% Satisfaction Guarantee promises that our products have been tested and fully work. We accept returns up to 30 days from delivery. Items just need to be in their original condition and packaging as received. We will apply a 20% restocking fee for returns if there were no issues with the item or if you changed you mind or didn't like them. If you have any issues, please give us the opportunity to resolve your concern. If the item is defective, non working, or does not match description, please contact us for an easy return.