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A large easy(ish) to find silver strip along the top of the neckband work as play/pause/answer/hangup. The phones have a conventional switch for power on/off and separate volume up/down keys which double as track forward/backward. The good news is that they all sound good - makes perfect sense for them to use similar electronics - why re-invent the wheel. Any significant differences are pretty much down to acoustics, effective seal and form factor. I have recently reviewed a number of bluetooth headphones and they all tend to operate in pretty much the same way and, from the electronics point of view, all sound pretty much the same. They use the APTX bluetooth protocol which means that the sound quality is excellent - for a wireless headphone. The phones should connect for both telephone calls and media playback. Simply run the SCAN function on your phone and select the Coulax CX04 when it appears in the list of devices. Simply switching the headphones on will automatically put them into pairing mode. One thing I did notice straight away is that these work really well when you’re lying down because the earbuds themselves are really small and you can lie on your side with them in without any problems. work rather than sports - they could potentially be fragile. The disadvantages are that you can’t simply put these phones in your pocket when you’re done with them - they pretty much have to remain around your neck at all times. The advantages are that the earbuds themselves can be considerably smaller and lighter, battery life can be considerably better (because they can be physically bigger) and the microphone is closer to your mouth - thereby making for clearer calls.
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There are a number of advantages and disadvantages in this type of design. The Coulax CX04 bluetooth headphone is an around the neck type headset whose design is similar to Sony’s SBH-80.
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