side autonomy is not bad either, with full load it around 6 hours.
Also a little voice tells you the estimated number of hours of remaining battery (when lighting .. and demand if desired)
just one drawback, the part behind the ear a little bit thicker, the on / off button a little misplaced and there is no indicator light
indicating that the latter is on (forced to put in the ear to hear the little voice that prevent you oreillete cuts) ... but hey, it's not the end of the world either :-)
voila, so my appreciation: 4.8 of 5