Motorola HS850 マニュアル

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Using Your Headset
Using Your 
Headset
Charging Your Headset
First-Time Use—Before you can use 
your headset, you need to charge its 
self-contained battery for two hours.
Recharging—When you hear five 
rapid high tones through the headset 
speaker, repeated at 20-second 
intervals, the headset battery needs to 
be recharged.
Over time, batteries gradually wear 
down and require longer charging times. 
This is normal. The more you talk on the 
phone with the headset, the less 
standby time your battery has.