The XTR1 conveniently displays all artist, song, and channel information on its six-line readout, which also includes a satellite-updated real-time clock. Meanwhile, selecting channels and menu options is a snap thanks to the large, easy-to-access illuminated buttons. And drivers will delight in such bonuses as the 18 station presets, which let you quickly access your favorite streams, and the S-Seek feature, which lets you know when one of your 10 stored song titles is playing on a given Sirius channel. You can even search the up-to-the-minute Sirius playlists by category, channel, artist, or song title.

The XTR1 sends its signal to your stereo receiver through its built-in wireless FM transmitter, which "broadcasts" the satellite signal over an unused FM frequency--no hardwiring required. As an alternative, you can also connect the XTR1 tuner directly to you stereo's input jack (if it has one) with the included patch cable for the best possible sound quality. And the docking cradle is versatile enough to work on almost any surface in your car, including the sun visor, windshield, or dashboard.

Additional features include a wireless remote for controlling the tuner from a distance; a sleep timer and traditional alarm; a lock function that lets you restrict access (via password) to Sirius' more off-color content, and a 3.5 mm headphone jack for private listening. The XTR1 tuner, which measures 2.75 by 4.62 by 1.38 inches (W x H x D), is backed by a one-year warranty on parts and labor.

Note: You must subscribe to Sirius satellite radio to receive the satellite rad