Bluetooth headphones banish pesky cords, but their heavy, bulky designs often fail in the comfort department. Not so with Logitech’s FreePulse Wireless Headphones. These lightweight, behind-the-neck-style cans are easy to wear and use Bluetooth 2.0 to deliver crisp, interference free sound up to 33 feet from your music player. The Bluetooth adapter fits in any standard headphone jack, and Logitech promises at least seven hours of battery life per charge.