Nokia BH-203 ユーザーズマニュアル

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To answer or end a call, press the 
multifunction key. To reject an 
incoming call, press the multifunction 
key twice.
To mute or unmute the microphone 
during a call, press and hold the 
multifunction key and the volume up 
key at the same time.
To switch the call between the 
headset and your compatible phone, 
press and hold the multifunction key 
and the volume down key at the same 
time.
To adjust the earpiece volume during a 
call, press the volume up (+) key to 
increase or the volume down (-) key to 
decrease the volume.
Battery information
Your device is powered by a rechargeable 
battery. The battery can be charged and 
discharged hundreds of times, but it will 
eventually wear out. Recharge your 
battery only with Nokia approved 
chargers designated for this device.
Unplug the charger from the electrical 
plug and the device when not in use. Do 
not leave a fully charged battery 
connected to a charger, since 
overcharging may shorten its lifetime. If 
left unused, a fully charged battery will 
lose its charge over time.
Never use any charger that is damaged.
Leaving the device in hot or cold places, 
such as in a closed car in summer or 
winter conditions, will reduce the 
capacity and lifetime of the battery. 
Always try to keep the battery between 
15°C and 25°C (59°F and 77°F). A device 
with a hot or cold battery may not work 
temporarily, even when the battery is 
fully charged. Battery performance is