EN
Bla ck-Be an Blue tooth H eadse t
Contents
Preface / P1
About Syllable / P1
Wireless Bluetooth Headset Operation / P2
Note / P7
Product Maintenance / P8
Tro uble Re mo val / P8
Produ ct L ist / P9
Main Ch ar acter is tics an d Pa rameter s / P9
Preface
Thank you for choosing syllable D900 . You will Bluetooth headset
enjoy high-quality sound and convenient hands-free calling! Please
keep this manual to get indication on operation
Wireless Bluetooth Headset Operation
Diagram for D900 Bluetooth Headset
3
AboutSyllable
“Syllable” is a high quality headphone brand created by Shenzhen
Kaijuyuan Technology Co.,Ltd. durability, fashion style, and
exceptional sound
“Syllable” means syllable which is the basic element in music. We
want to use our technology and craft to make a high quality headphone
which can let you feel each nice syllable of music
1
1
2
1 Charging thimble
4 Entity button
5 Charging tactile disc
2 Charging socket
4
5
3 Power supply indicator
2
Wireless Bluetooth Headset Operation
Wireless Bluetooth Headset Operation
1. Power on
Press and hold the entity button for 2 seconds when power is off
3
2. Poweroff
Press and hold the entity button for 6-7 seconds when the power
is on, then the red LED will be flashing for one second and a
notification sound will be heard accordingly
3. Connect earphone to cellphone
Enter connection mode of cellphone: when the power is off or the
blue LED is flashing, press and hold one of the entity buttons
which in L/R earphones for 3-4 seconds, then both red and blue
LEDs flash alternately and fast. Use the Bluetooth function in your
cellphone to search for “D900” and click connection; input the code
“0000” if needed
4
Wireless Bluetooth Headset OperationWireless Bluetooth Headset Operation
4. Connect L/R earphones
Lef t
Connection mode for L/R earphones: when you complete the connection of
single side earphone, press and hold the entity button for 1-2 seconds, both
red and blue LEDs are on at the same time, then red and blue LEDs flash
alternately and slowly after releasing, or release the entity button after a beep
sound to be heard, at this time enter pairing mode for L/R earphones. The
other earphone does not need to connect cellphone, just press and hold the
entity button for 1-2 seconds when the power is on, until that both red and
blue LEDs are on at the same time, then release the entity button and both
red and blue LEDs will be flashing alternately and slowly, or release the entity
button after a beep sound to be heard, two earphones flashing red and blue
lights alternately and slowly (ready for pairing), and searching for the link
automatically. (For the paired previously earphone cellphone, press and hold
Power On button for 2 seconds to automatically connect)
5
Rig ht
5. Call function
（when calling, the button of earphone which firstly connected to
cellphone is available and only the earphone can hear the voice
when calling.）
Dial: when earphone is connected to cellphone, press the entity
button twice to re-dial the latest phone number.
Incoming call: when there is an incoming call, press the entity
button to answer the call, press and hold to refuse it.
End call: press the entity button to end call when calling.
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Wireless Bluetooth Headset Operation
5. Playing music
(it has the same function with the entity buttons of L/R earphones,
and the output is stereos.)
Playing music: when earphone is connected to cellphone, press the
entity button to play music.
Pause: when playing the music, press the entity button to pause.
6. Recharging earphone
Charging: the new earphone has a dielectric film, release it and put
transparent cover before charging
Note
1. When entering connect mode of L/R earphones, both red and blue LEDs
flash alternately and slowly, and delete all the connection record of all
L/R earphones.
2. When you playing the music, blue LED light flashes slowly.
3. The red light is keeping on when the battery is low.
4. Put the earphone into the battery compartment, the red LED indicates
recharging, the blue LED indicates full charging.
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Product Maintenance
a. Please keep this product dry and use clean soft cloth to clean the surface of the Bluetooth headset.
b. Please use this product when permitting, e.g. on the airplane that allows to use wireless Bluetooth
transmission, etc.
c. Never place the Bluetooth headset in dust, high temperature or especially low temperature areas.
d. Never tear down the Bluetooth headset by yourself, because non-professional handling will do damage
to the Bluetooth headset.
e. Never perform destroyed operation to the Bluetooth headset, e.g. beating and crashing, etc.
f. Never produce short circuit between the Bluetooth headset and charging connector of power charging
box, because this operation can damage the circuit and battery.
g. Please use original accessories. Any accident caused by other accessories is not in the purview of
guarantee.
Trouble Removal
Phenomenon Reason Solution
Starting-up failure low battery charge for about 3 hours
No sound after pairing wrong pairing re-pairing
Red light shines during
phone talking
No indicator during
charging
Shut down automatically
Echo
Noise during phone calls
Low volume of the caller
low battery warning please charge immediately
no voltage output from
AC adaptor
low battery
volume is too high or environment
is too noisy
environment disturbance or
headphone Is too far away
from device
wrong wear of headphone
check if AC adaptor is well plugged
in or if power switch is on
charge for about 3 hours
adjust volume or change environment
change environment or shorten the
distance between headphone and device
adjust headphone position
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Product List
USB c hargi ng cabl e
Wireless Bluetooth
Headset
Model: D900
Instruction Book
Warranty card
Main Characteristics and Parameters
Characteristics
1. True wireless abilities: Syllable realizes “movement and wireless control”, and everyone can share
music within 10m.
2. Limitless charging: Matched storage box is provided with built-in Lithium electric device that can
provide charging support more than six times to earplug.
3. Sing headset or both headsets: Each earplug is provided with a complete set of circuit system so that
you can use a singe one or both two.
4. Active noise reduction: Adopt active noise reduction circuit design in combination with in-ear earplug
design to effectively filter outside noises.
5. Comfortable and convenient: Earplug and ear-hook are made of food-grade silica gel material in
combination with the design to avoid falling off, which makes you comfortable and relieved.
6. One button to answer the phone: One button to answer the phone with multiple functions keeps you
away from tedious life, convenient and fast
7. Color in riotous profusion: Heyddo D900 Bluetooth headset is possessed of multiple color combination,
satisfying your “colorful” needs.
9
Main Characteristics and Parameters
Items Parameters
Drive r 8mm copper-ring loudspeaker
Imp ed anc e 16 Ω
Bluet oot h ver si on V4.0
Power l eve l
Wor kin g vo lta ge 3.2 V-4 .2V
Sensitivity of microphone
Bluetooth
frequency brand
Bluet oot h dis ta nce
Audio transmission
protocols
Power supply indicator
CLASS II DSP phase compensation
-4 2dB±2dB
2.4 -2 .48 GHz
10M
A2DP/AVRCP high quality stereo
Red light lightens when charging, and blue
light lightens if the headset is fully charged.
10
FCC Caution.
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.
Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the
equipment.
Note: 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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