Letscom HV-358Pro User manual

Wireless Earbuds
HV-358Pro
User Manual
Thank you for purchasing our products. This manual addresses
the safety guidelines, warranty and operating instructions. Please
review this manual thoroughly before operating your device.

IMPORTANT SAFETY INSTRUCTIONS
●Use of the 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.
●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.
SAFETY AND WARRANTY
A
1

● 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, waterskiing,
surfing, etc.
● 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. Use 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.
2

● 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.
※ Do not use a charging case that is damaged or modified.
Damaged or modified batteries may exhibit unpredictable
behavior resulting in fire, explosion or risk of injury.
※ Do not disassemble the charging case. Incorrect reassembly
may result in risk of fire or injury.
※ Do not open, crush or expose a charging case to fire or
excessive temperature. Exposure to fire or extreme
temperature may cause explosion.
※Have servicing performed by a qualified repair person using
only identical replacement parts.
WARRANTY
Letscom strives to build our products with the highest attention to
detail and craftsmanship. However, sometimes there are
occurrences of defect.
We are happy to offer 1-year hassle-free warranty to all Letscom
products as we continue to make amazing wireless product.
Please contact us if you have any questions about Letscom
devices.
3

●Wireless earbuds × 1 pair (left and right)
●Charging case × 1
●Eartips × 3 pairs (large, medium, small)
●Micro USB cable × 1
●User manual × 1
Package Contents
B
At a Glance
C
Right earbud
4
MFB button
(multi-function button)
Microphone
Charging contacts
R (for the right ear)
Replaceable eartip

LED indicator Micro USB charging port
Charging case
Left earbud
5
MFB button
(multi-function button)
Microphone
L (for the left ear)
Charging contacts
Replaceable eartip

Earbud LED Indicator Guide
D
Charging Case LED Indicator Guide
E
Earbuds are being charged in charging case: Side LED indicators are solid
red
Earbuds are fully charged in charging case: Side LED indicators are solid blue
for 2 minutes and go off.
Charging case is being charged: The middle LED indicator flashes red
Charging case is fully charged: The middle LED indicator is solid red
●Power on: LED indicators are solid white for 3 seconds
●Power off: LED indicators are solid white for 2 seconds
●Pairing mode: LED indicators flash white rapidly
●Paired with phone/during calls/music playing: LED indicators
flash white every 5 seconds
●Low battery: LED indicators flash red every 30 seconds
●Earbuds are being charged: LED indicators flash red slowly
6

Insert the earbud into your ear and rotate to fit comfortably.
Ensure the microphone is pointing towards your mouth.
Wearing the Earbuds
F
7

1. Charge the earbuds
Using the Earbuds
G
Charging contacts
Charging contacts
Charging pins Charging pins
1) Align the charging contacts on the right earbud with the
charging pins on the right side of the case.
8
When earbuds are being
charged properly, the
LED indicators stay red.

2) Repeat steps 1 and to charge the left earbud.
3) Close the case when the earbuds LED indicators flash red
slowly.
2. Charge the charging case
1) Plug the small end of the USB cable into the Micro USB port
of the charging case.
2) Plug the other end into a USB wall charger or computer (DC
5V) that is powered on.
①
②
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