Is the RadioShack 2-Channel Bluetooth Speaker worth it?

Only at a low price. It covers Bluetooth, AUX and FM in one portable box, but it lacks water resistance and a stated battery life, and better-known brands offer more for similar money.

How long does the battery last?

RadioShack does not list a battery life or capacity for this model. Expect a few hours at moderate volume, less when pushed loud, and charge it fully before first use.

Does it have a microphone for calls?

No microphone or speakerphone feature is listed. It is a music and radio speaker, so take calls on your phone.

Can I use it with a TV or older MP3 player?

Yes, through the AUX input with a standard 3.5 mm cable. Bluetooth covers phones and tablets.

What comes in the box?

Typically the speaker and a charging cable. An AUX cable and power adapter are not confirmed, so check before buying if you need them.

No current price was provided, so there is no price history to time a purchase against. Compare it with similar 30 W Bluetooth speakers before buying.