Nokia HDW 2 - Manual (Page 9)

Getting started
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When the battery charge falls low
The fully charged battery has power for up to 3 hours of talk time and up to 60
hours of standby time. (In standby mode, the headset is switched on but no call is
in progress.)
When the battery is running out of power, the headset beeps. Charge the battery
as described above.
■ Changing the battery
When the operating time is noticeably shorter than normal, it is time to buy a new
battery.
To change the battery:
1. Open the battery door by gently sliding it
backwards (1).