2-IN-1 Bluetooth-Compatible Audio Adapter AUX 3.5 Adapter For Older Speakers Specification: Product Name: Bluetooth-Compatible Adapter Product Material: PC Bluetooth-Compatible Version: 5.3 Audio Interface: AUX, RCA Transmission Distance: approximately 10M in an indoor effective connection range Compatible with older speakers, amplifiers, desktop computers, mobile phones, laptops, tablets, etc. Package includes: 1* Adapter Note: Only includes the products mentioned above. The adapter meets U.S. standards. Specifications are manually tested and are for reference only. Please allow a 0-1cm error due to manual measurement. Make sure you don't mind before purchasing. Due to differences between various monitors, pictures may not accurately reflect the actual color of the item. Thank you.