Checking the remaining battery charge
You can check the remaining battery charge of the rechargeable battery.
When you turn on the headset, the indicator (blue) flashes two times, then the indicator (red) flashes.
When you press the 
button while the power is on, the indicator (red) flashes and voice guidance indicating the remaining battery charge.
The indicator (red) flashes according to the remaining battery charge as follows.
Flashes 3 times 
- - - - : High “Battery level high”
Flashes 2 times - - : Medium “Battery level medium”
Flashes 1 time : Low (needs to charge) “Battery level low”
When the battery is almost empty
The indicator turns red. When the battery becomes empty, the headset sounds a warning beep, you hear voice guidance “Please recharge headset”, and the headset turns off automatically.
When you are using an iPhone or iPod touch
When the headset is connected to an iPhone or iPod touch (iOS) that supports HFP (Hands-free Profile ), it will show an icon that indicates the remaining battery charge of the headset on the screen.
Usable devices
iPhone or iPod touch which supports HFP (Hands-free Profile) (iOS 5.0 or later)
iOS 10.2 or later
iOS 7.0 or later
iOS 5.X/6.X
A: Remaining battery charge of the headset
B: 100% to 70%
C: 70% to 50%
D: 50% to 20%
E: 20% or lower (needs to charge)
Hint
- You can also check the remaining battery charge with the “Sony | Headphones Connect” app. Android smartphones and iPhone /iPod touch support this app.
Note
- If you connect the headset to an iPhone or iPod touch with “Media audio” (A2DP) only in a multipoint connection, the remaining battery charge will not be displayed correctly.
