Transaction•if the customer cannot discover an identical product, the customer can deliver us the product and model, and we're ready to reward it for you.• After installation, if now not working, please contact us as quickly as possible, and our engineers can assist you solve the problem.• at the time of delivery, please verify the correctness and completeness of the goods. If the products are mistaken or damaged, please refuse to signal and call us.• 100% new meaning new product.• Our electrical components voltage is 220 V, if your country voltage is different, please contact us• Warranty:3 months guarantee, substitute and warranty. The customer shall pay for the transportation despatched back• the default shipping is Buydo standard delivery.• if you wish diverse transport methods, please touch us, we will give you the following shipping tricks :DHL, EMS, UPS, FEDEX• Customer delight is essential for us. Please dont leave any neutral or damaging suggestions before touch us feedback is not the preferrred way to clear up any problem. We can interact to unravel any dispute.• Your 5 superstar feedback is our motivation, looking ahead to nice feedback!Thank you very much!