Half the point of having an iPhone 5 (6.1.4) is being able to use siri to assist. This headset did not communicate with siri at all; It did activate siri, but siri couldn't hear commands. After a long convo with Plantronics technical support, who posit the fault is with siri, I am sending it back.
Otherwise, the headset seems sturdy and well made. I was sad it didn't work, its cute as these things go.
I rated this a 1-star, but it should really be zero.
While many aspects are good, including the incoming sounds, the outgoing sound (what I sound like to others) is horrible, and virtually unusable. This could be perfect in every way, but when others can't hear you or the quality is so annoying as to disrupt calls, the device is worthless.