
The Calisto Pro is the long-anticipated successor to the CT12, and it really is a huge step forward. The main advancement of course, is the Bluetooth technology that eliminates the cord between the remote pack and the headset. This provides so much more freedom than the CT12. There are a ton of other less glaring improvements that make the Calisto so much easier to use than the CT12 – a sturdier, more dependable belt clip, a bigger LCD screen, more talk time, a more comfortable design, and a sleeker, updated look are just some of those features. I find the earpiece more comfortable than the CS55 as well, which is always nice. Of course, the Calisto is an over-the-ear only headset that can’t be converted to an over-the-head wearing style, but this should only put off the most die-hard of headset purists. When I paired it up with my cell phone it worked well and sounded good too. What more do you need? I like the sound quality of this a lot more than the voyager 510 I usually use.