Bluetooth handsets score over hands-free earphones because they literally come with no strings attached! If you travel a lot and want to do it in style, then Sennheiser has created the luxury M 450 travel headset just for you. Priced around a staggering $480, the product is compatible with a wide array of Bluetooth enabled devices. It promises crystal-clear sound quality with its active noise reduction capabilities and A2DP stereo Bluetooth profile. Packaged with airplane direct cable adapters, the headset also comes with a closed-capsule design and built-in volume control features. A lithium-polymer battery that can be charged with a USB chord sums up the entire package.