earfun TW201B Air S Noise Cancelling Wireless Earbuds User Manual
- June 9, 2024
- EarFun
Table of Contents
TW201B Air S Noise Cancelling Wireless Earbuds
User Manual
EarFun Air S
ANC Wireless Earbuds
what’s in the Box
Product Diagram
- Touch control zone
- Microphone
- Earbuds LED indicator
- Charging contactor
- USB-C charging port
- Charging case
- Reset button
- Battery level indicator
Charging
- Fully dry off the earbuds and the USB-C port before charging.
- Remove the insulating film on the earbuds before using this device
- Open or close the charging case to activate the case battery level LED indicator.
- Place earbuds back into the charging case and the earbuds will start charging.
- Fully charge both the earbuds and the charging case before the first-time usage.
- Connect USB-C cable for charging
- Wireless charging(not included)
Specifications
| Bluetooth version | VS.2 |
|---|---|
| Bluetoothfrequency | 2.402GHz-2.480GHz |
| Bluetooth transmitted power | <7dBm (for EU) |
| Bluetooth profile | A2DP, AVRCP, HFP, HSP |
| Maximum working range | 15m(without obstacle) |
| Battery capacity | 40mAh x 2(earbuds), S00mAh(charging case) |
| Charging time | 1hour(for earbuds); 2 hours(for charging case via US8-C); |
3.5 hours(for charging case via wireless charger)
Playtime| ANC OFF–Up to 6 hours, Totally 30 hours with the charging case,
(varies by volume level and audio content)
ANC ON–Up to 5 hours, Totally 25 hours with the charging case,
(varies by volume level and audio content)
Input| 5V ****1A
Dimentions| 56mmx65mmy 31mm
Weight| 52g
How to Fit
Note: it may affect the noise cancelling effect if you are not wearing the earbuds correctly.
- Take tip fit test to ensure the correct size.
- Identify the left and right earbuds.
- Place the earbuds in your ear canal and rotate to lock.
Pairing
1. First-time Pairing with Device
Step 1 : Open the charging case, and the earbuds will automatically power
on and enter pairing mode.
Step 2: Activate Bluetooth on your Bluetooth-enabled device and search
for other Bluetooth devices.
Step 3: Select “EarFun Air S” from the list of Bluetooth devices shown
(if a password is needed, type ‘0000’), 
Notes:
• The earbuds will automatically connect with the device they were last paired
with when the case is open. Each earbud could be used independently.
2. Connect to a New Device
Option A
Step 1: Unpair the earbuds from the Bluetooth-enabled device that’s
connected. The earbuds will disconnect from the current device and enter
pairing mode for another pair.
Step 2: Search on the new device and connect. 
Option B
Step 1: Place both earbuds back into the charging case and make sure they
are being charged Keep the lid open, then press and hold the charging case
button for 3 seconds until the LED indicators on earbuds flash in blue
rapidly.
Step 2: Search on the new device and connect. 
3. Pairing and Connecting two Bluetooth devices simultaneously
Step 1 : Pair with the first device and stay connected.
Step 2 : Keep the earbuds in the charging case, then tap and hold the
charging case button for 3 seconds until the LED indicators on earbuds flash
blue rapidly, and then the earbuds enter pairing mode and will disconnect from
the first device.
Step 3: Search on the second device to connect the earbuds.
Step 4 : Manually reconnect the earbuds on the first device. 
Note: The earbuds will automatically connect to both two devices after finishing setting up the multipoint connection.
Functions
Power on/off
Open the charging case, the earbuds will automatically power on.Place the
earbuds back into the charging case and close the case, then the earbuds will
automatically power off.
Note:
If the earbuds are not connected to any device, they will automatically power
off after 10 minutes for saving the battery life, 
Note:
- Turn on the game mode can drop latency to as low as lOOms and improve the gaming and watching video experience, but it will shorten the connection distance. We suggest you turn off the game mode when you use the earbuds for music.
- The normal mode provides latency about 200ms.
- Bluetooth technology can’t eliminate latency.
Earbuds LED Indicator
| Power on | Blue indicator flashes for 1second |
|---|---|
| Power oft | Red indicator flashes for 1second |
| Pairing mode | Indicator flashes blue |
| Successfully connected | Indicator goes out |
| Factory reset | Indicator flashes purple |
Reset and Reconnecting
If you fail to build connection to either earbud, or between earbuds and
Bluetooth device, please try the following steps:
- Place both earbuds into the charging case.
- Keep the charging case open, then press and hold the charging case button for at least 8s until both earbuds flash in purple, then earbuds have been reset successfully.
- Delete the old connection from the Bluetooth device and reconnect “EarFun Air S”,
Troubleshooting
Q:Can l use both earphones separately?
A: Yes, each earbud could be used independently.
Q: The earphones are turning on, but it doesn’t connect to my device?
A: To connect the earbuds to your device, please check if the Bluetooth of the
device is on at first, then select ‘EarFun Air S’ on the Bluetooth list to get
paired. If the earbuds still can’t connect to your device, please try to reset
it, or contact our customer support.
Q: Why the connection is not stable and cuts out intermittently?
A. Please make sure there are no objects between the earphones and your
Bluetooth device, and make sure there is no radio or WIF] interference nearby.
Q. What is the range of Bluetooth earphones?
A. Bluetooth earphones have maximum range of 49 feet (15m, no obstacle).
However, the actual range will depend on usage and environment.
Q:ls there volume control on the earphones?
A Yes, touch L earbud once decreases the volume and touch R once could
increase it.
Q: My earphones will not switch on.
A Please recharge it and make sure it has enough battery power. If it is fully
charged and still nothing happens or if you are not able to charge the unit,
please contact our customer support for warranty cover.
Q.ls the charging case waterproof?
A:No, the earbuds are sweat & waterproof, but the charging case is not
waterproof.
Q. Will the earbuds shut off automatically?
A The earbuds will remain on as long as they are connected to a device. If no
audio is in use, they will enter power-saving mode and wake up once audio is
played. If the earbuds are not connected with any devices, they will
automatically shut off in 10 minutes.
For FAQS and more information:
Please Email to: service@myearfun.com
www.myearfun.com
FCC Statement
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
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, [f 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.
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.
(2) This device must accept any interference received, including interference
that may cause undesired operation,
RF Exposure Compliance
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This transmitter must not be co-located or operating
in conjunction with any other antenna or transmitter.
CAUTION
Risk of explosion if the battery is replaced by an incorrect type Disposal of
a battery into fire or a hot even, or mechanically crushing or cutting of a
battery, that can result in an explosion;Leaving a battery in an extremely
high temperature surrounding environment that can result in an explosion or
the leakage of flammable liquid or gas,
A battery subjected to extremely low air pressure that may result in an
explosion or the leakage of flammable liquid or gas.
To prevent possible hearing damage, do not listen at high volume levels for
long periods.
The Bluetooth word mark and logos are registered trademarks owned by Bluetooth
SIG, Inc. and any use of such marks by Earfun Technology (HK) Limited is under
license.
Qualcomm apt is a product of Qualcomm Technologies, Inc. and/or its
subsidiaries.
Qualcomm is a trademark of Qualcomm Incorporated, registered in the United
States and other countries. aptX is a trademark of Qualcomm Technologies
International, Ltd., registered in the United States and other countries.
Other trademarks and trade names are those of their respective owners.
EU Declaration of Conformity
Earfun Technology (HK) Limited hereby declares that this equipment is in
compliance with the essential requirements and other relevant provisions of
Directive 2014/53/EU and RoHS 2011/ 65/EU Directive, The declaration of
conformity may be consulted in the support section of our Web site, accessible
from www.myearfun.com
UK Declaration of Conformity
Hereby, [Earfun Technology (HK) Limited] declares that the radio equipment
type [TW2O1] is in compliance with UK Radio Equipment Regulations (SI
2017/1206). The full text of the declaration of conformity is available at the
following internet address: www.myearfun.com
ISED Compliance Statements
This device contains licence-exempt transmitter(s)/receiver(s) that comply
with Innovation, Science and Economic Development Canada’s licence-exempt
RSS(s). Operation is subject to the following two conditions:
(1) This device may not cause interference.
(2) This device must accept any interference, including interference that may
cause undesired operation of the device, This equipment complies with [C
RSS-102 radiation exposure limits set forth for an uncontrolled environment.
MODEL: TW201
FCC ID: 2AVIT-TW201
HVIN: TW201
IC: 25936-TW201
