Sirius Satellite Radio introduced the Sportster4, a plug-and-play radio that can be used both while driving and at home.

A smaller version of the current Sportster Relay, this device comes with a vehicle dock that includes an input for MP3 players. A boombox dock is expected to follow.

The Sportster4 enables users to pause, rewind and replay up to 444 minutes of Sirius programming. It also has a feature called S-Seek Alert that stores the names of favorite artists and songs and issues an alert to listeners when they are playing on any channel.

The Sportster4 also displays sports scores for any team of the user’s choice, which appear on the screen while other programs are running.

The device will retail for about $170.