User Manual - Page 23

You can also check the remaining battery charge of the headset with the “Sony | Headphones Connect” app. Android

smartphones and iPhone/iPod touch both support this app.

If the headset and smartphone are not connected with HFP, the remaining battery charge will not be correctly displayed.

If you connect the headset to an iPhone/iPod touch or Android smartphone with “Media audio” (A2DP) only in a multipoint

connection, the remaining battery charge will not be displayed correctly.

The remaining battery charge may not be properly displayed immediately after a software update or if the headset has not been

used for a long time. In this case, repeatedly charge and discharge the battery multiple times to properly display the remaining