Bluetooth 5.4 compatible wireless audio adapter, perfect for hands-free calls. - Model Name: GT69 - Bluetooth Version: Bluetooth 5.4 - Features: Hands-free calling, low-latency audio transmission - Compatibility: In-car and home use - Type: Wireless audio adapter - Features: LED indicator, long-range communication Thank you for viewing. I used it in my car, but I'm selling it because I no longer need it after switching vehicles.