Having started working from home & being on the road a lot, I needed to get a decent Bluetooth so I can work whilst on the phone... Clamping a phone under your ear may be OK in the 80s when they were several inches thick, but trying to securely wedge a slim smartphone between your shoulder and bonce is impossible.
I read reviews, I looked at specs & I decided this was the headset for me!
I was delighted when it was delivered - it's properly tiny and so light you forget you're wearing it, and even wearing glasses wasn't a problem. The portable charging dock is awesome too - meaning you can have long battery life, but without having to have the pre-requisite big battery on your ear. It even comes with a belt clip so you don't have to fiddle about in your pockets to find the tiny lump.
As a piece of design it's fantastic.
The problems came when trying to use it take make calls... In use, I had no end of distortion between this & either of my two phones. Interference wasn't an issue - the phones were on my desk less than 50cm away with no obstructions. The signal was so poor that the advertised A2DP feature didn't work at all - giving the kind of choppy sound you'd expect from a corrupt MP3 streaming over bad dial up. Even on a good day when I could just about make out what people were talking about - they complained that they couldn't hear me.
I'd love to say it's a weird bug with my phones - an iPhone 4 & an HTC Sensation... If IOS & Android don't work properly there's a flaw here.
I did pair it to my PC as well to use on a Skype call - but I pretty quickly had to resort to a wired headset we could hear each other. Maybe I got a faulty one...
I've just bought a Plantronics Voyager Pro+ and the sound quality is staggering - makes the Stone2 sound like a child's toy! Yes - the Stone2 looks awesome - but I'm starting to think you can't have the microphone in your ear & expect people to hear what's coming out your mouth!