Groupon offers the Motorola Oasis DualMic Bluetooth Headset, model no. HX520, for $25.99 with free shipping. That's $3 under our January mention and the best price we've ever seen for a new unit. (It's also a current price low by $14.) Features include dual microphones, up to six hours of playback, advanced voice prompts, a range of up to 33 feet, and more. Deal ends April 19 at 1 am ET.