KOSS TWS150i True Wireless Earbuds Instructions
- June 5, 2024
- KOSS
Table of Contents
KOSS TWS150i True Wireless Earbuds
Start Included
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Earbuds
-
Charging Case
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Ear Cushions
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Charging Cable
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Instructions
Product Overview
- Charging case with battery life status lights
- USB charging port
- Earbud status light
- Touch strip
- Voice mic
- Acoustlcal vent hole
- UR indicator
- Magnetic charging contacts
Specs
- Bluetooth Version: Bl1.1etooth V6.0
- Input Power: SV=-=-=380mA
- Charging time: c 2h
Power On
-
Method 1
Open the charging case, the white lights will luminate for 1 second. The ear buds will automatically power on. -
Mathod2
While earbuds are in an off state. touch and hold the touch strip of both earbuds for about S seconds, lights will illuminate for 1 second to show the ea-buds are powered on. -
Protective film must be removed from earbuds before they can be powered a, and paired.
Pairing
Mobile Phones and Headphones
Power on the left and right earbuds as described in the “Power On” portion of
this guide. Find and select “KOSS TWSl 50i” in the Bluetooth list.
NOTE:
- When power is on, the earbuds will auto-connect with the last connected device within 1 C seconds. If the connection fails, the earbuds will enter pairing mode.
- If the earbuds are not connected to any device, they will automatically turn off after 1 0 minutes.
Connection Lost
Bluetooth Off
Problem: If Bluetooth on source device is turned off, the earbuds will
automatically tum off after 1 a minutes. If earbuds are disconnected, the L/R
earbuds red and white lights will flash alternately.
Solution: Make sure that the source device’s Bluetooth is turned on; then
power on earbuds again.
Out of Connection Range
Problem: lf the connection between the device and the earbuds exceeds the
effective range, the earbuds will power off automatically after 1 0 minutes.
Solution: Make sure that device is in range, then power on earbuds.
Incoming call
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Answer Call
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End Call
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Reject Call
Music
Pause/Play
Double tap the L/R earbud touch strip to pause/play music in standby or music mode.
- While paused: Indicator lights illuminate once every 5 seconds
- While playing: Indicator lights illuminate once every 5 seconds
Next Track
Hold the right earbud touch strip for2s
Previous Track
Hold the left earbud touch strip for 2s
Power Off
Place the earbuds into the charging case and closed the lid to automatically power down ear buda.
Charging
Earbuds Charging
Place the earbuds in the charging case.
- Charging: The left and right lights of the charging case will flash
- Fully charged: No charging case lights are illuminated
LED Status When the Charging Case Charges the Earbuds
The L side charging case light slowly flashes when the L earbud is charging. The R side charging case light slowly flashes when the R earbud is charging. When Land R earbuds are charges at the same time, the Land R charging case lights slowly flash at the same time. When the earbud’s batteries are full, the charging case lights will indicate the battery power level for 5 seconds.
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LED status when the charging case is charging
- When the power is below 30%, the left light flashes.
- When the power is 30%~60%, the left light is always on and the center light flashes.
- When the power is greater than 60%, the left and center lights are always on and the right light flashes.
- When power is 100%, all 3 lights remain on.
-
LED status when charging case is not charging
- When the power is below 10%, the left light flashes.
- When the power is 10%-30%, the left light is on. When the power is 30%o-60%, the left and center lights are on.
- When power is 70%~100%, all 3 lights remain on.
Safety and Care
Using earbuds at high volumes for extended periods of time may result in
permanent hearing damage. It is advised you keep volume levels moderate to low
at all times for your safety. Do not use while driving a car, cycling,
operating machinery, or performing other activities that require hearing
surrounding sounds. Earbuds may not work properly under high temperature or
high humidity conditions. Do not use any corrosive cleaner/oil to clean the
earbuds. If the earbuds come in contact with liquids, quickly wipe away .lf
submersed in water do not turn the earbuds on until completely dried.
Tips: liquid submersion voids the warranty. Keep the earbuds and
packaging out of reach of children.
Battery warning
- For batteries with removable batteries, must be recycled or handled properly. Disassembly is not allowed for products that cannot be removed.
- Do not disassemble, strike, crush or put the battery into fire. Do not expose the battery to conductive materials, liquids, fire, or high temperatures.
- Do not allow metal objects to touch the two poles of the battery. Do not continue to use the battery if it has bulges, leaks, discoloration, odors, or any other abnormality.
- Do not use the battery after it has been submerged in water.
- If the battery is used improperly, it may explode or leak, causing burns and other personal injuries. If the battery leaks, it should be carefully. disposed of according to the local laws and regulations concerning battery disposal.
FCC Warning
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference, and
- 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. The device has been evaluated to meet general RF exposure statement. The device can be used in portable exposure condition without restriction FCC ID: L76-TWS1501
Warning: Changes or modifications to this unit not expressly approved by the part responsible for compliance could void the user’s authority to operate the equipment
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