User's Manual

The headset can support t he funct ion of “ 3-way call” if your SI M card
supplier allows this funct ion to you. When you’re having a call and want ed by
anot her call:
1. Press and hold m ult i-funct ion butt on until you hear a beep first and then
a inflect ion, thus you can rem ain t he act ive call and pick up the latter
one.
2. Press shortly m ult i- funct ion button unt il t he headset beeps, you can end
the active call and pick up the latt er one.
3. Press and hold the “ volum e increase” button unt il you hear an inflect ion,
then you can ent er a 3- way call: during t he call, press and hold t he
“ volum e decrease” button until you hear 2 beeps first and then an
inflect ion, you can end all calls.
3 .1 6 Low Ba t t e ry Alert
When t he bat tery is running out of power, the headset indicat or will flash
from blue to red and a beeping sound will be heard every 20 seconds
indicat ing that the bat t ery needs t o be recharged. 4. I m portant I nform at ion
4 . I m port ant I nfor m at ion
4 .1 Maint enance
1. Please keep the headset in a dry place, and clean it periodically with a soft
clot h.
2. Please do not st ore t he headset in a dusty place, nor in very high nor low
tem perat ures.
3. Please do not disassem ble the headset.
4. Try to avoid rough t reat m ent like dropping, knocking or shaking t he
headset.
5. Be sure t o only plug the adapt er int o appropriate electrical outlet s, in
order t o avoid dam aging the batt ery.
4 .2 Bat tery
1. Before using t he headset for t he first tim e, please m ake sure the battery
has been fully charged for at least 3 hours.
2. Batt ery m aintenance:
- Only professional could change t he batt ery.