User Manual
True Wireless Earbuds for Clear Phone Calls
Model: TWS120
Brand: Avantree
Product Overview
Earbuds
Left Earbud (L) and Right Earbud (R) depicted. Each earbud has a touch-sensitive area.
Charging Case
Charging case with two LED indicators: LED 1 and LED 2.
Included Accessories
EarGels in three sizes: Large (L), Medium (M), Small (S).
Micro-USB Cable.
How to Wear
Select & Replace Eartips
To achieve the best fit and sound isolation, try all included eartip sizes. The medium-sized eartips are pre-mounted. Ensure eartips are securely attached. Flip the eartips over and mount them onto the earphones, then adjust the earphone to align the microphone hole.
Fitting Adjustment
Insert the earphone into your ear and adjust for comfort. A proper fit enhances noise isolation.
How to Charge
The Avantree TWS120 offers up to 8 hours of battery life per charge, with the charging case providing an additional 3-3.5 charges, totaling up to 36 hours of playtime.
Charging the Earphones
When a "battery low" voice prompt is heard, place the earphones back into the charging case. Charging takes approximately 1.5 hours. The earphone LEDs illuminate RED during charging and turn WHITE for 10 seconds before turning off upon completion.
Earphone charging status:
- Battery Low: Earphone LED is RED.
- Charging: Earphone LED is RED.
- Fully Charged: Earphone LED turns WHITE for 10 seconds then turns off.
(Note: Earphones automatically power off approximately 10 minutes after the first low battery warning.)
Charging the Case
Charge the case when its left-side LED (LED 1) flashes RED. The case also charges the earphones when they are inside. Use a DC 5V / 0.5-2A USB charger (wall, car, or computer port) with the included Micro-USB cable. The left-side LED (LED 1) shows RED while charging. When fully charged, LED 1 turns off, and the right-side LED (LED 2) illuminates GREEN.
Charging connection diagram: A charging case connected via Micro-USB cable to a power source labeled "DC 5V / 0.5-2A" or a laptop.
Basic Operations
| Function | Operation |
|---|---|
| Power On | Open the case lid; LED illuminates WHITE for ~1s. |
| Power Off | Place earphones in the charging case and close the lid. LEDs illuminate RED then turn off. |
| Pairing | Once powered on, earphones connect to each other. The Right earphone enters pairing mode (LED flashes WHITE & RED alternately). |
| Play / Pause | Double tap the touch area on either earphone. |
| Volume Up | Slide up on the touch area of the Left earphone. |
| Volume Down | Slide down on the touch area of the Left earphone. |
| Previous Track | Slide up on the touch area of the Right earphone. |
| Next Track | Slide down on the touch area of the Right earphone. |
| Answer / End a Call | Double tap the touch area on either earphone. |
LED Indications
For Earphones
| Status | LED Indication |
|---|---|
| Connected with mobile device | R earphone double-flashes WHITE every 5s. |
| Not connected with mobile device | R earphone flashes WHITE once every 1s. |
| Earphones connected with each other | L earphone double-flashes WHITE every 5s. |
| Earphones not connected with each other | L earphone flashes WHITE once every 1s. |
| Battery low | LEDs flash RED 4 times every 2 mins. |
| Charging | LEDs stay SOLID RED. |
| Fully charged | RED LEDs turn to WHITE for ~10s then turn off. |
For Charging Case
| Status | LED Indication |
|---|---|
| Battery low | Left-side LED (LED 1) flashes RED. |
| Charging | Left-side LED (LED 1) stays SOLID RED. |
| Fully charged | Right-side LED (LED 2) turns SOLID GREEN. |
How to Pair
Connect to a Bluetooth Device
- Open the case to turn ON the earphones. Earphone LEDs should be flashing WHITE.
- Wait for the R earphone's LED to flash WHITE & RED alternately (Pairing Mode).
- On your device's Bluetooth menu, search for and select "Avantree TWS120". It will show as "Connected".
- The earphones will automatically reconnect to your device when taken out of the case.
Diagrams illustrate the pairing process: Fig 1-1 shows the R earphone in pairing mode. Fig 1-2 shows a smartphone's Bluetooth menu with "Avantree TWS120" connected.
Note: To connect to another device, disable Bluetooth on the previously connected device first.
Mono Earphone Use
Both R and L earphones can be used independently.
Using the R Earphone Independently
- Open the case to turn on both earphones.
- Remove the R earphone and close the case. The earphones will attempt to auto-reconnect. "Avantree TWS120" will appear as "Connected" on your device, and you will hear "Connected".
Diagrams illustrate using the R earphone independently: Fig 2-1 shows the R earphone removed from the case. Fig 2-2 shows a smartphone's Bluetooth menu confirming the R earphone connection.
How to Clear Pairing History / Reset
Reset the R Earphone
- Open the case to turn ON the earphones. Earphone LEDs should be flashing WHITE.
- Wait for the R earphone's LED to flash WHITE & RED alternately (Pairing Mode).
- Long press the R earphone for approximately 10 seconds until the LED lights WHITE & RED simultaneously (appears PINK) for about 5 seconds.
Diagrams illustrate resetting the R earphone: Fig 4-1 shows earphones in the case, Fig 4-2 shows the R earphone flashing WHITE & RED, and Fig 4-3 shows a finger pressing and holding the earphone.
Reset the L Earphone
- Open the case and remove only the L earphone. Then close the case.
- Wait for the L earphone's LED to flash WHITE & RED alternately (Pairing Mode).
- Long press the L earphone for approximately 10 seconds until the LED lights WHITE & RED simultaneously (appears PINK) for about 5 seconds.
Diagrams illustrate resetting the L earphone: Fig 5-1 shows the L earphone removed from the case, Fig 5-2 shows the L earphone flashing WHITE & RED, and Fig 5-3 shows a finger pressing and holding the earphone.
Note: These reset steps clear pairing history with your Bluetooth device. For one-sided audio issues, visit avantree.com/tws120/video for manual earphone connection instructions.
Before attempting to pair again, forget or delete "Avantree TWS120" or "Avantree TWS120S" from your device's Bluetooth list.
Diagram shows a smartphone Bluetooth menu with an option to "Forget This Device".
Support
FAQ
View frequently asked questions at: https://avantree.com/product-support/BTHS-TWS120-BLK
How to Take Care of Your TWS120
- Always store earphones in the charging case for protection.
- Follow specific cleaning instructions if needed.
- The TWS120 operates optimally between 0°C and 40°C (32-100°F). Performance may be affected outside this range.
- Avoid storing earphones for extended periods (over three months) without recharging.
- Charge the case using standard USB voltage (5V ± 0.25V). Avoid using power supplies with higher voltage.
