No Warranty, No return, No Replacements, No Exchange on this item. 
Tested ok product
About this item
This is a wireless air mouse with built-in axis gyroscope and gravity acceleration sensor and fidelity voice input.
2.4G Air Fly mouse + Voice Remote + IR remote learning mouse.
The fly air mouse remote Powe Key can programs.Convenience to control all your devices in one, if you have any problem when using the IR learning function,please read the product description and welcome to ask us for help
Use browsers like Silk and Firefox to access millions of websites like YouTube, Facebook and Reddit
This mini wireless keyboard is connected by a stable powerful 2.4GHz RF technology, just plug USB receiver,the transmission distance can up to 10 meters.