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What is included with the LYAMBDA LBS201 Bluetooth speaker?

The LYAMBDA LBS201 package includes:

A: Bluetooth speaker

B: Type-C charging cable

C: User manual


What are the basic functions of the buttons on the LYAMBDA LBS201 speaker?

Button Action Function
Short press 1 time Volume –
Long press 1.5s Previous track
Power (Triangle symbol) Long press 1.5s Power on/Power off
Power (Triangle symbol) Short press 1 time Pause/Play music/Pick up/hang up the call
Power (Triangle symbol) Short press 2 times Protect call privacy/Reject incoming calls/Sound mode switching
+ Short press 1 time Volume +
+ Long press 1.5s Next song
Light (Sun symbol) Short press Light switching/Light on/Light off
Light (Sun symbol) Short press 3 times Disconnect the Bluetooth connection
Light (Sun symbol) Short press 2 times Connect/Disconnect TWS

How do I power the LYAMBDA LBS201 speaker on and off?

To power on the LYAMBDA LBS201, long press the “Triangle” button for 2 seconds. To power it off, press the “Triangle” button again.


How do I connect my LYAMBDA LBS201 speaker via Bluetooth?

The LYAMBDA LBS201 will enter Bluetooth mode automatically after powering on, and the blue indicator light will flash. On your device, choose “LBS201” from the list of available Bluetooth devices. You will hear a voice prompt once it is connected, and the blue indicator light will stay on. You can then start playing your music. To disconnect the Bluetooth connection, short press the “Light” button 3 times.


How do I control music playback and volume on the LYAMBDA LBS201?

Pause/Play: In Bluetooth mode, short press the “Triangle” button to pause the music. Short press it again to resume playback.

Volume Control: Short press the “+” button to increase the volume. When the volume reaches its maximum, you will hear a “dudu” tone. Short press the “-” button to decrease the volume.

Track Control: Long press the “+” button to skip to the next song. Long press the “-” button to go to the previous song.


How do I use the TWS (True Wireless Stereo) function on the LYAMBDA LBS201 speaker?

The LYAMBDA LBS201 supports TWS connection. To use this feature, you will need two LBS201 speakers.

1. With both speakers powered on, short press the “Light” button two times on both speakers to turn on TWS pairing.

2. You will hear a voice prompt for a successful pairing.

3. The sub-master model’s indicator light will keep on, and the master model’s indicator light will flash.

4. Repeat the process to disconnect TWS. When connected, you can enjoy music via various sound channels.


How do I change the lighting modes on the LYAMBDA LBS201?

In the power-on state, short press the “Light” button to switch the lighting mode. The sequence is mode 1, mode 2, mode 3, and then mode 4 (off).


How do I manage phone calls with the LYAMBDA LBS201?

When there is an incoming call and your LYAMBDA LBS201 is connected via Bluetooth, the speaker will automatically enter handsfree mode.

Answer/End a call: Short press the “Triangle” button to answer an incoming call. Short press it again to hang up.

Reject a call: Short press the “Triangle” button 2 times to reject an incoming call.

Transfer call audio: During a call, short press the “Triangle” button 2 times to transfer the call audio from the speaker to your phone for privacy.


How do I switch between sound modes on the LYAMBDA LBS201?

The LYAMBDA LBS201 supports two sound effect modes: standard balanced sound and outdoor sound (medium and high frequency sound). To switch between the modes, short press the “Triangle” button twice. The default sound mode is standard balanced sound.


Does the LYAMBDA LBS201 have a power-saving feature?

Yes, the LYAMBDA LBS201 will automatically shut down after 10 minutes if there is no device connected, to save power.


How do I charge the LYAMBDA LBS201 speaker and know when it’s fully charged?

When you hear the low battery prompt tone, please charge the speaker as soon as possible.

When charging, the red charging indicator light will be on. The indicator light will turn off when the speaker is fully charged.

Important Notes:

Do not use power adapters without safety certification.

It is recommended to use an output 5V/1.5A (or above) adapter to charge.


What do the different status indicator lights on the LYAMBDA LBS201 mean?

The status indicator on the LYAMBDA LBS201 shows the following:

Bluetooth search indicator: Blue light flashing

Charging indicator: Red light always on

Low battery indicator: Red light flashing

During music playback, the LED light can be set to Light model 1, Light model 2, Light model 3, or Light model 4 (off).


What kind of charger should I use for the LYAMBDA LBS201 speaker?

All common USB 5V chargers can be used, but we suggest using ones that are 5V/2A or above 2A.


What should I do if there is noise or discontinuous sound while playing music on my LYAMBDA LBS201?

The LYAMBDA LBS201 speaker can be normally used within 10 meters under no obstruction environment. If it is beyond 10m or with an obstruction, there might be noise or discontinuous sound.


Why does my LYAMBDA LBS201 speaker power off automatically when not in use?

When there is no Bluetooth pairing for 10 minutes, the speaker will shut down automatically to reduce power consumption.


What should I do if my LYAMBDA LBS201 speaker cannot connect to a previously paired cellphone?

First, remove the speaker’s paired name from the cellphone’s Bluetooth list and then restart the pairing process.


What can I do if my LYAMBDA LBS201 speaker cannot be started up?

Please plug in the charger and try again in a few minutes, or try to long press the power button for 10-30 seconds to reset the device.


What are the general usage notes for the LYAMBDA LBS201 speaker?

1. Please read this manual carefully before use and keep it properly.

2. For the first use, please fully charge the product.

3. Please use a certified adapter that has passed national safety certification.

4. If you do not use the product for a long time, be sure to charge it once within a month at least to maintain its performance.

5. Do not use this product in an extremely cold or hot environment, such as temperatures beyond the range of 5°C-35°C. If used beyond the above range, the product may stop automatically to protect the internal circuit.

6. When charging it in a high temperature environment, the product may automatically stop charging to protect the battery. At this time, the charging indicator usually flashes quickly to indicate that the charging environmental temperature or the product internal temperature is too high.

7. Storage environment temperature: -5-35°C RH<70% (recommended 25°C±5).


What are the important safety instructions for the LYAMBDA LBS201 speaker?

1. Do not disassemble or repair this speaker personally, otherwise it may cause product damage or personal injury.

2. Do not use it in dusty, humid, dry, and high-temperature environment.

3. Do not place this product near a heat source, or a place with direct sunlight, a lot of dust, or mechanical vibration.

4. In order to reduce the risk of fire, please do not cover this product with newspapers, tablecloths, curtains etc., during use.

5. If the product has a waterproof feature, please do not exceed the nominal parameter range when using it.

6. When the product is damaged such as the power cord or plug is damaged, liquid enters or objects fall into the device, unable to operate normally or falls, it must be repaired.

7. When the product is fully charged, do not connect it to the charger for further long time charging.

8. The maximum ambient temperature should not exceed 40°C.


What are the technical specifications for the LYAMBDA LBS201?

Model LBS201
Bluetooth Version 5.3
Battery Capacity 3.7V / 3000 mAh
Playing Time 5 – 6h (70% Volume, LED light mode is off)
8 – 9h (50% Volume, LED light mode is off)
Talking Time 7 – 8h
Charging Time 3-4h
Charging Current 5V=1.5A
Speaker Unit 8W x2
Product Size 95.6×95.6×103 mm
Product Weight 394 g±10
Function Bluetooth 5.3 with two speakers 8W
Input USB Type-C
Transmission Distance 10 m
Support handsfree function Yes
Speaker unit 47 mm, 8W*2/4Ω
S/N ratio ≥70 dB
Frequency response 70 Hz – 18 kHz
Working time 5-6H at 70% volume
8-9H at 50% volume (LED off)
Material ABS, fabric
Cable length 65 cm
Weight 394 g ± 10 g
IPX7 Yes
Support TWS Yes
4 LED lighting modes Yes
Built-in DSP with 3 passive radiators Yes
2 EQ (standard-outdoor) Yes
Included a charging cable and a carrying strap

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