Lenovo Headphones W770 User Manual

W770  
Wireless Headset  
W770  
Wireless  
Headset  
User Manual  
Product name: Lenovo Wireless Headset W770  
Product standard: Q/HDLCS103-2009  
Manufacturer: Lenovo (Beijing) Limited  
Address: No.6 Chuang Ye Road, Shangdi Information  
Industry Base, Haidian District, Beijing, China  
Zip Code: 100085  
 
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I. PRODUCT INTRODUCTION  
Dear customers,  
Thank you for selecting high-quality electronic product offered by Lenovo. This headset  
is manufactured with internationally advanced 2.4 GHz wireless audio transmission  
technology. This technology is characterized by stable signal (easily avoiding the  
interference of other signals with high frequency hopping anti-interference technology),  
long transmission distance and Hi-fi stereo.  
This headset consists of one USB Dongle and one receiver (headset). Its in-built  
Lithium polymer battery of 380 mAh provides a standby time of 6 hours, allowing you  
enjoy the music and chat online freely.  
OS requirement: WIN XP, WIN 2000, WIN 7, VISTA, Apple MAC  
Compatible players: MediaPlayer, RealPlayer, etc.  
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II. INTRODUCTION Of heaDSeT CONNeCTION  
1. First, connect the USB Dongle to the USB interface of the computer. The computer will  
automatically recognize the USB Dongle. After it prompts that the device installation is  
completed, the device can be used normally (with the computer providing tips for first  
use).  
2. Turn on the headset. After it completes connection with the USB Dongle, the headset  
can be used normally.  
III. heaDSeT bUTTONS  
Working State  
Indicator  
On/Off  
Charging  
Indicator  
Toggle Switch  
Charging Port  
1. On/Off  
a. Power On: By pressing this button for over 1 second in power off state, blue LED  
lamp is constantly on, and the headset is started.  
b. Power Off: By pressing this button for over 1 second and then releasing it in power  
on or playing state, blue LED lamp is off, and the headset is powered off.  
2. Toggle switch  
a. Pause/Play: In playing state, press middle part of this button to pause, and press  
middle part of this button again to resume the playing.  
b. Previous/Next: Press this button and hold for a moment to play the previous/next  
song.  
c. Volume +/-: Toggle this button upwards/downwards to increase/decrease the  
volume.  
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IV. INDICaTOR LamP  
1. Red LeD lamp  
Red LED lamp is the charging indicator. It lights on when the device is charged, and is  
off when the charging completes (or low level lighting).  
2. blue LeD lamp  
Blue LED lamp is the working state indicator.  
a. When power on, this lamp is on indicating the device works normally;  
b. This lamp is off when the device is powered off or the battery is out of power.  
V. mICROPhONe  
The microphone is hidden multi-directional microphone, providing superior gaming and  
chatting experience.  
Microphone  
VI. ChaRgINg INSTRUCTIONS  
Charging cable  
Charging port  
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1. Connect 3.5 mm charging plug with the headset first, and connect USB connector of  
the charging cable with USB port of the computer or USB port of dedicated charger.  
Red LED lamp is on and the device enters the charging state.  
2. When the charging is completed, red LED lamp is off. You could just disconnect the  
charging cable.  
Notes:  
This headset is equipped with inbuilt irremovable charging battery. Please do not  
remove the battery to avoid the damage to the headset.  
The charging time of the headset battery for the first time should be 12 - 24 hours  
to activate the best operating state of the battery. Later on, the charging time will  
be 2 - 3 hours (please do not charge the device for over 24 hours to avoid the  
damage to the service life of the battery).  
This 3.5 mm plug can only be used for connecting the charging port of over  
W770, but cannot connect the audio port of the audio device such as PC.  
VII. WeaRINg INSTRUCTIONS  
1. Please distinguish the left and right side of the headset when wearing it: “L” on the  
bracket indicates the left side, while “R” indicates the right side.  
2. Both sides of the headset are equipped with collapsible headphones. The length can be  
adjusted accordingly to make you enjoy the music comfortably! The stretched length is  
24±1 mm.  
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VIII. ROTaTINg eaR PaD  
90 degrees of  
rotation  
IX. faQS  
No sound can be heard  
1. Check whether the USB Dongle has been plugged in USB port of the computer, and  
the microphone has been powered on;  
2. Adjust the volume with the toggle switch on the headset;  
3. Close and reopen the multimedia player;  
4. Check the headset power and charge it if low;  
5. Check whether the sound playback is switched to the wireless headset. Some systems  
may not switch the sound automatically, so please follow the steps below:  
In XP system  
a. Right click the voice controller in the Task Manager, and select Adjust Audio  
Properties.  
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b. Select the Audio Properties and check whether the default sound playback device is  
“Lenovo Wireless Headset W770”. If not, click on “Lenovo Wireless Headset W770”  
to set it as the default value, and then restart the player to switch the sound over.  
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In WIN7 system  
a. Right click the voice controller in the Task Manager, and select the Playback  
Devices option as shown by the arrows in the picture below.  
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b. Check whether the default device is “Lenovo Wireless Headset W770”, and if not,  
click on the speaker Lenovo Wireless Headset W770 and set it as the default value  
to switch the sound over.  
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X. PRODUCT PARAMETER  
Headset:  
Drive unit ............................................................................................................... 2 x 40 mm  
Frequency response........................................................................................20Hz ~ 20KHz  
Impedance................................................................................................ 32Ω±15% @ 1kHz  
Sensitivity (SPL)...............................................................................103±3dB/1mW @ 1KHz  
Signal to noise ratio........................................................................................................65dB  
Working voltage...............................................................................................................3.7V  
Working current .............................................................................................................58mA  
Battery capacity.........................................................................................................380mAh  
Continuous working time................................................................................................... 6H  
Charging time................................................................................................................. 2.5H  
Input power...................................................................................................................20mW  
Maximum input power ..................................................................................................45mW  
Net weight of headset.....................................................................................................160g  
Net weight of USB Dongle..................................................................................................6g  
Microphone:  
Frequency response...................................................................................... 100Hz ~ 10kHz  
Impedance..............................................................................................2.2kΩ±10% @ 1kHz  
Sensitivity ................................................................................ -38±2dB @ 1kHz 0dB=1V/PA  
Signal to noise ratio........................................................................................................55dB  
USB Dongle specification:  
Working voltage..................................................................................................................5V  
Working current .............................................................................................................55mA  
Transmitting power...................................................................................................... <+6dBM  
Transmitting range...........................................................................................................10M  
Modulation mode.......................................................................................................... GFSK  
Frequency range ................................................................................. 2404MHz ~ 2476MHz  
Interface...........................................................................................................................USB  
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XI. PaCkage CONTeNTS  
W770  
Wireless  
Headset  
User Manual  
Wireless headset  
USB Dongle  
USB charging cable  
Warranty and notice manual  
User Manual  
XII. heaRINg PROTeCTION  
Suggestion for preventing the hearing damage:  
1. When using the headset, too high volume may cause the hearing loss.  
2. Please adjust the volume as appropriate: adjust the volume to the lowest level, open  
the player, increase the volume gradually until you feel comfortable in hearing and  
definition is not distorted.  
3. If the dialog and other similar ambient noise can be heard without interference, the  
volume is appropriate.  
4. Adjust the volume to comfortable level and keep it. In case of the tinnitus, discomfort  
or sound distortion, please decrease the volume or stop the listening, and check your  
acoustic state.  
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XIII. SafeTy INSTRUCTION  
Please read all warnings and instructions carefully.  
1. Do not use this headset near the water source to prevent water from entering the  
headset or damaging the headset function.  
2. Install/use this headset according to the instructions of the manufacturer.  
3. Keep this headset away from fire (such as flaming candle).  
4. Do not install this headset near the heat source (including the heater, heat ventilating  
devices or other heat-producing devices).  
5. This headset can only be used with the accessories specified by the manufacturer.  
6. This headset must be repaired by the qualified personnel.  
Warning: Wireless USB Dongle will produce electromagnetic signal, so use it  
carefully in places where the heart pacemaker or related medical device is used.  
XIV. fCC NOTe  
headset model: W770  
CMIIT ID: 2011DP5808  
FCC ID: A5MW770  
USb Dongle model: WD770-B CMIIT ID: 2011DP5809  
FCC ID: A5MWD770-B  
federal Communications Commission Declaration of Conformity  
This equipment has been tested and found to comply with the limits for a Class B digital  
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide  
reasonable protection against harmful interference in a residential installation. This  
equipment generates, uses and can radiate radio frequency energy and, if not installed  
and used in accordance with the instructions, may cause harmful interference to radio  
communications. However, there is no guarantee that interference will not occur in a  
particular installation. If this equipment does cause harmful interference to radio or  
television reception, which can be determined by turning the equipment off and on, the  
user is encouraged to try to correct the interference by one or more of the following  
measures:  
Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and receiver.  
Connect the equipment into an outlet on a circuit different from that to which the  
receiver is connected.  
Consult the dealer or an experienced radio/TV technician for help.  
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Lenovo is not responsible for any radio or television interference caused by using other  
than recommended cables and connectors or by unauthorized changes or modifications to  
this equipment. Unauthorized changes or modifications could void the user's authority to  
operate the equipment.  
This device complies with Part 15 of the FCC Rules. Operation is subject to the following  
two conditions: (1) this device may not cause harmful interference, and (2) this device  
must accept any interference received, including interference that may cause undesired  
operation.  
Responsible Party:  
Lenovo (United States) Incorporated  
1009 Think Place-Building One  
Morrisville, NC 27560  
Telephone: 1-919-294-5900  
RF Exposure Statement  
The radiated energy from the Lenovo W770 Wireless Headset conforms to the FCC limit of  
the SAR (Specific Absorption Rate) requirement set forth in 47 CFR Part 2 section 1093.  
XV. Notices for India  
Headset ETA No.: 1768/2012/WRLO  
Dongle ETA No.: 1769/2012/WRLO  
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