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click image to enlargeThere is 3.5cm of expansion on each side and when fully expanded it is 21cm from the tip of the earpieces to the centre of the extremely well padded headband. The distance between earpieces when vertical is 19cm.
They come with a solid zip up case and the headphones fold and sit in the case one way only to give extra protection.
Also in the box are a USB to USB ‘C’ cable to charge the headphones and a 2.5mm to 3.5mm cable to connect to MP3 or other such devices. Joy or joys the Quick Start Guide is a good size 21x17.5cm and the text in a single language is easy to read and there are plenty of illustrations to explain the controls for even the novice user.
Like almost all Apps there is a firmware update to do that will not complete unless your headphones have at least 50% of battery. Mine arrived with 29% but ten minutes of connection increased this to 61%. You are warned that it can take 10 minutes to complete, in my case it was more like 20 minutes.
So having charged and completed the Firmware update time to investigate the App.
The feature I liked is that the equalizer talks in plain language but for those who have special requirements you can still set these levels manually.
The left earpiece has the on/off button which as soon as you turn on will seek a phone to link too or on subsequent occasion’s link immediately to that phone.
Everything else is on the right earpiece, play, pause, next track, restart track, answer call, end call, decline call and voice assistant, all well explained in simple clean statements.
Further round the right earpiece is a single raised button that controls the noise reduction with clear statements as to on/off and mute controls. There are three levels of noise reduction which is vital when walking so you can still hear a warning horn sound.
For the times when things are not going right there is a page that explains what the various colours of the LED’s are showing you.
For those times when something is not right then there is a User Guide built into the App that relates to everything including how to add music to either your iOS or Android phone.
Sound quality was excellent and playing the same track with different equalizer settings really makes a large difference. This is probably down to the quality of the 40mm driver.
They are not that light at just over 300 grams. A full battery should last 25 hours but that is flexible according to settings.
These are excellent headphones and combined with a well thought out App should give you exactly the sounds you want.
At the time of publication the Shure Aonic 40 Wireless Noise Cancelling Headphones are available from from Amazon priced at £215.