Please email us your order number to get the following services:

1. Lifetime extended warranty.

2. Free return or replacement for defective products even if the Amazon return period has ended.

3. Technical support if you have any usage problems..

Amazon order format: 111-2222222-3333333

How to find your order number:

1. Log in to your Amazon account.

2. Click on your order.

3. Find the order details of the product you purchased, you will see a string of numbers, such as 111-2222222-3333333, which is your order number.

Please click here:

Email us

Email: support@otyhvv.com

FB：@OTYHVV