Notice: 1. Please make sure the DC output and tip size of ac adapter are accordant before you order. 2. If you use the adapter for a long time, please keep it suitable ventilating and humidity. Do not put it on the skin products. Service Information: For your own interests and safety, if there is any abnormal condition when using the product, please stop using it immediately and contact with our customer service center How to contact us？ You can contact us directly from Your Account. Locate the order and click the "Problem with this order?" button. Then select the "Contact Seller" button to send us an e-mail message. We would be glad to solve any problem for you within 24 hours. Your support to our business and your patience on the matter will be really appreciated. Warranty: 30 Days Money Back Guarantee / 60 Days Free Exchange With Paid Return Label / 360 Days Anytime Worry-Free Warranty! / Please contact us with any questions or concerns - we are here to help!