Plantronics H141N DuoSet offers convertible convenience. Freely choose between over-the-ear or over-the-head styles (both styles included); ideal for first-time headset users; conformable ear loop for secure over-the-ear fit; noise-canceling microphone for noisy office environments. Plantronics Quick Disconnect (QD) so you can walk away while still wearing the headset. Plantronics H141N Duoset Noise-canceling headset, whether worn over-the-ear or over-the-head, the convertible style H141N allow you to make good use of your hands while multi-tasking. The headset is comfortably secure, and the sound quality is superb.