Groupon Goods has the Emerson Bluetooth Wireless Sport Headphones with Mic and Remote (EM509) for $29.99 + FREE shipping!

What makes this deal hot:
Save 70% off -- that's $69.96 in savings!

What this does and why you need it:
Using a Bluetooth-equipped MP3 player or smartphone, you can now listen to music and make phone calls while going hands-free. The headphones can pick up players from up to 30' away. There are also controls for music playback, volume and call answering.