Bluetooth 5.0 Nano USB Adapter, Windows compatible. - Model: UB500 - Bluetooth Version: Bluetooth 5.0 - Compatibility: Windows 10/8.1/7 - Connection Type: Nano USB Adapter - Package Contents: Bluetooth 5.0 Adapter, USB Driver, Quick Installation Guide ☆Thank you for viewing☆ I used it once after purchase, but it was not compatible with my device, so I haven't used it since m(*_ _)m The package says it has a 3-year warranty, but since time has passed since the purchase, there is no warranty (>ㅿ<;;)