Letsfit T20 User manual
Package Contents...............................................
At a Glance..........................................................
Earbuds LED Indicator Guide.............................
Charging Case LED Indicator Guide..................
Wearing the Earbuds..........................................
Using the Earbuds..............................................
Cleaning the Earbuds and Charging Case........
Trouble Shooting................................................
Specifications.....................................................
SAFETY AND WARRANTY...............................
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Contents
Package Contents
①Wireless earbuds × 1 pair (L / R)
②Charging Case × 1
③ Ear tips × 3 pairs (S / M / L; M size ear
tips pre-installed)
④Ear wings × 3 pairs (S / M / L; M size ear
wings pre-installed)
⑤USB-C charging cable × 1
⑥ User manual × 1 - 1 -
③
L M S ② ①④⑤L M S L M S
⑥
At a Glance
- 2 -Earbuds
LED Indicator
Touch Button
Microphone
Charging Contacts
Charging Pins
Function button
Charging Case
LED indicator USB-C charging port
Charging Case LED Indicator Guide
Power on
Power off
Being charged
Fully charged
The indicator stays green
for one second
The indicator flashes red
and green alternately
The indicator stays red
The indicator goes off
System State Indicator Activity
50%-100% battery
10%-50% battery
1%-10% battery
The indicator stays green
for 10 seconds
The indicator stays orange
for 10 seconds
The indicator flashes orange
Battery Level Indicator Activity
Earbuds LED Indicator Guide
- 3 -Press the function button of the charging case
to check the charging case battery level.
Wearing the Earbuds
- 4 -
Insert the earbud into the inner canal of your
ears and rotate to fit comfortably. To determine
the best fit, you may need to try all sizes of ear
tips and ear wings.
Charge the earbuds
1) Align the charging contacts on the right
earbud with the charging pins on the right
side of the case.
2) Repeat step 1 and to charge the left earbud.
3) Close the charging case lid.
Using the Earbuds
Notes:
● Fully dry off the earbuds before charging.
● The earbuds will not be off and charge if
you don’t close the charging case lid.
Therefore, please close the lid when
putting earbuds back for charging.
● When the earbuds have a battery
percentage of less than 10%, the earbuds
will give a voice prompt every 20 seconds.
- 5 -
R
Charge the charging case
1) Plug the small end of the USB-C cable into
the USB-C port of the charging case.
2) Plug the other end into a USB wall charger or
computer (DC 5V) that is powered on.
- 6 -
Power on & off
Power on: Open the charging case.
Power off: Put the earbuds back into the charging
case and close the case lid.
Notes:
● It takes approximately 1.5 hours to fully
recharge the earbuds.
● Fully charge both the earbuds and the
charging case before the first-time using.
● The earbuds and the charging case charge
simultaneously. The charging case can be
used as a standalone charger.
Pair
1) Make sure the earbuds and your Bluetooth
device are next to each other or within 3 feet
and there are no obstacles between.
2) Open the charging case and the earbuds enter
pairing mode.
3) Turn on the Bluetooth of your Bluetooth device.
4) In the list of found Bluetooth devices in your
Bluetooth device, choose "T20" to pair.
- 7 -
Connect to other devices
1) Put the earbuds back into the charging case.
2) Press and hold the function button of the
charging case for 3 seconds and the earbuds
enter pairing mode.
3) Choose "T20" in your device to pair.
Settings Bluetooth
Bluetooth
T20 Connected
MY DEVICES
OTHER DEVICES
100%9:41 AM
T20
MY DEVICES
Notes:
● The two earbuds will automatically connect
with each other when you open the
charging case. But if the TWS connection
fails, put the earbuds back into the
charging case and press the function
button of the case 3 times (the charging
case indicator flashes white and orange
alternately for 5 seconds and goes off).
● The earbuds will directly enter pairing
mode the first time you open the charging
case.
● Each time when earbuds are on, they will
automatically connect to your last
successfully connected device if available
within the Bluetooth range.
● When the earbuds are on but not paired
with a Bluetooth device, they will be
automatically off in 10 minutes.
● Mono mode: When Bluetooth connected,
you can use either one of the earbuds only
by putting the other one back into the
charging case and closing the lid.
- 8 -
Play / Pause
Previous / Next
track
Double-tap the touch button of the
left or right earbud.
Tap and hold the touch button of
the left / right earbud for 3 seconds.
Function What to do
Earbuds functions
- 9 -
Call functions
Answer / end a call
Reject a call
Activate Siri or
other voice
assistant software
Deactivate Siri or
other voice
assistant software
Double-tap the touch button
of the left or right earbud.
Triple-tap the touch button
of the left or right earbud.
Triple-tap the touch button
of the right earbud.
Tap and hold the touch
button of the left or right
earbud for 2 seconds.
Function What to do
The earbuds and charging case may require
periodic cleaning.
- 10 -
Earbud nozzles
Charging pins (on
earbuds and case)
Charging case
Clean only with a dry, soft
cotton swab or equivalent.
Note: Never insert any
cleaning tool into the nozzle.
To prevent rusting, regularly
clean with a dry, soft cotton
swab or equivalent.
Clean only with a dry, soft
cotton swab or equivalent.
Cleaning the Earbuds and Charging Case
Reset the earbuds
1) Put the earbuds back into the charging case.
2) Press and hold the function button of the
charging case for 10 seconds until the
charging case indicator flashes green 5 times.
Trouble Shooting
Q: Pairing fails.
A:1) Put the earbuds back into the charging
case and close the lid.
2) Open the case, the earbuds are
automatically on and enter pairing
mode.
3) Choose "T20" in your Bluetooth
device to pair.
If the pairing still fails, check the
following points:
●Make sure the earbuds and your
Bluetooth device are next to each other
or within 3 feet and there are no
obstacles between.
● There are no signal interference
nearby (check the "Connection is not
stable" part for signal interference
conditions).
●Try to reboot your Bluetooth device.
- 11 -
Q: Connection is not stable.
A: Bluetooth signal is transmitted wirelessly
and signals can be affected, which
results in intermittent sound of earbuds,
in the following conditions:
● The distance between the earbuds and
your Bluetooth device is at the edge of
the Bluetooth pairable distance.
● Transmitted signals encounter
obstacles or human body blockage.
● There are high-power electronic
devices nearby.
● There are other Bluetooth devices and
are being turned on/off nearby.
To resume stable connection between
the earbuds and your Bluetooth device,
try to avoid the above conditions and do
the pairing again following the steps in
the pairing fails part.
- 12 -
Q: I paired the earbuds with my phone
before, but I failed to pair them with
my phone again.
A: Turn on the Bluetooth of your phone and
in "MY DEVICES", choose "T20" and tap
" " → "Forget This Device". Then pair
the earbuds with your phone again.
Q: Power runs out fast.
A: The earbuds playtime varies according
to volume level and audio content. The
following conditions may cause fast
power consumption:
●When you put the earbuds back into
the charging case, the earbuds will
not turn off and charge if you do not
close the case lid. To avoid unwanted
power consumption, close the lid
every time you put them back into the
charging case for charging.
● When the earbuds are being charged
in the charging case and the case is
out of power, the earbuds will turn on
automatically. To avoid unwanted
power consumption, turn off the
earbuds manually.
- 13 -
Specifications
- 14 -
Model
Bluetooth Version
Battery
Charging Time
Input
Playtime (varies by
volume level and
content)
Bluetooth Range
Supporting Protocols
Waterproof Rate
Working Temperature
T20
V5.0
40mAh (each earbud),
500mAh (charging case)
Approximately 1.5 hours
(earbuds), 1.5 hours
(charging case)
DC 5V/1A
4-5 hours per charge
(Up to 30 hours with
charging case)
10 meters / 33 feet
A2DP / HFP / HSP / AVRCP
IPX5
-10°C to 40°C
- 15 -
SAFETY AND WARRANTY
Important safety instructions
● Use of earbuds will impair your ability to
hear other sounds. Use caution while
using your earbuds when you are
engaging in any activity that requires your
full attention.
● If you have a pacemaker or other
electrical medical devices, you should
consult your physician before using this
product.
● This package contains small parts that
may be hazardous to children and should
be kept out of reach from children. This
product is not a toy – never allow children
to play with this product. Always store the
product out of reach from children. The
bags themselves or the many small parts
they contain may cause choking if
ingested.
● Never try to dismantle the product
yourself, or push objects of any kind into
the products, as this may cause short
circuits which could result in a fire or
electric shock.
- 16 -
● None of the components can be replaced
or repaired by users. Only authorized
dealers or service centers may open the
product. If any parts of your product require
replacement for any reason, including
normal wear and tear or breakage, please
contact us.
● Avoid exposing your product to rain,
moisture or other liquids to protect against
damage to the product or injury to you.
● Keep all products, cords, and cables away
from operating machinery.
● If the product overheats, if the product has
been dropped or damaged, if the product
has a damaged cord or plug, or if the
product has been dropped in a liquid,
discontinue use and contact us.
● Do NOT use in areas where there are
explosive hazards.
● Do NOT submerge the earbuds in water.
Do NOT expose the earbuds to moving
water (e.g., from a faucet, etc.).
● Do NOT wear the earbuds while showering
or bathing, or when participating in water
sports, e.g., swimming, water skiing,
surfing, etc.
- 17 -
● This product contains magnetic material.
Consult your physician on whether this
might affect your implantable medical
device.
● Leaving the product in hot or cold places,
such as in a closed car in the summer
and winter conditions, will reduce the
capacity and lifetime of the earbuds.
● Dispose of the product according to local
standards and regulations.
Remember: Always drive safely, avoid
distractions and follow local laws!
● Using the earbuds while operating a
motor vehicle, motorcycle, watercraft or
bicycle may be dangerous, and is illegal
in some jurisdictions, just as use of the
earbuds with both ears covered while
driving is not permitted in certain
jurisdictions. Check your local laws.
● Using the earbuds while operating a
motor vehicle, motorcycle, watercraft or
bicycle may be dangerous, and is illegal
in some jurisdictions, just as use of the
earbuds with both ears covered while
driving is not permitted in certain
jurisdictions. Check your local laws. Use
- 18 -
caution while using your earbuds when you
are engaging in any activity that requires
your full attention. While engaging in any
such activity, removing the earbuds from
your ear or turning off your earbuds will keep
you from being distracted, so as to avoid
accident or injury. Do not take notes or read
documents while driving.
● When using and charging this product, basic
precautions should always be followed,
including the following:
※Read all the instructions before using the
charging case.
※To reduce the risk of injury, close
supervision is necessary when the charging
case is used near children.
※ Do not expose charging case to water, rain,
liquids or snow.
※Use of a power supply or charger that is not
recommended or sold by power pack
manufacturer may result in a risk of fire or
injury.
※ Do not use the charging case in excess of
its output range.
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