The TAO XM2Go Portable Headphones for XM Satellite Radio is an excellent item for those who want to utilize the portability of the TAO receivers, or the other compatible XM2Go receivers such as the MyFi and Pioneer Airware. It is made with a built-in antenna, allowing for reception wherever you move. This headset is incredibly durable and is made for all environments. A perfect accessory for those who want to maximize the use of their XM subcription and never want to leave XM programming. Product Features: • Built-In Antenna • Indoor/Outdoor • Much Improved signal over older models Technical Specifications: Model #: SA10161 Manufacturer: DELPHI Weight: 1 lb. Available Documentation: In order to view our radio hardware manuals online, you will need to have Adobes Acrobat Reader installed on your computer. If you do not yet have Acrobat Reader, please visit Adobes web site to download the reader free of charge. TAO XM2Go Headphones User Guide