Overview:
Operation:
First Time Pairing:
Before using the earphone for the first time, please fully charge the earphone and the charging case to make sure both work normally.
To pair your earphone with your mobile phone, please follow the steps:
1) Open the charging case, your earphone will power up automatically.
2) Enable Bluetooth on your smartphone, scan and select “STX-EVT” from Bluetooth device list, and tap to connect. Once paired, the earphone will be added to the paired device list.
Manual Pairing:
To manually pair your earphone with your mobile phone, please follow steps as below:
1) Please delete (or ignore) your earphone from Bluetooth Settings \ Bluetooth \ Paired device list in phone system settings.
2) Wearing the earbuds, tap and hold both surfaces for 3 seconds. You will hear “paring” sound to indicate the status.
3) Enable Bluetooth on your smart phone and scan for available devices, select “STX01-EVT” from the scan list and tap to pair.
4) Once paired, your earphone will be added to the paired device list and be connected.
5) Later, every time your earphone powers up, it will connect the last paired system automatically.
6) If you fail, please repeat step 1-4.
Reset:
If connection fails, you can restore your earphone to factory settings and connect again. To do this, please follow the steps as below:
1) Delete (or ignore) your device from Bluetooth Settings \ Bluetooth \ Paired device list in your mobile phone system.
2) Tap and hold both surfaces for more than 10 seconds to reset the paring information
Earphone Operation:
| Function | Action |
| ON | open the lid of the battery case (ANC is on, Volume is at a medium listening level) |
| Pairing (first time) | open the lid of the battery case |
| Re-Connect (When there are devices in the pairing table it tries to reconnect for 10 seconds, then it switches to pairing) | open the lid of the battery case |
| OFF | close the lid of the battery case |
| Play | tap the right surface |
| Pause | tap the right surface |
| Volume + | swipe up on the right surface |
| Volume – | swipe down on the right surface |
| Next | swipe forward on the left surface |
| Previous | swipe backwards on the left surface |
| Take a call | tap the left surface when a call comes in |
| End a call | tap the left surface when in a call |
| Decline a call | tap and hold the left surface for more than 2s when a call comes in |
| Activate assistant | tap the right surface twice |
| Transparent ON | tap the left surface |
| Transparent OFF | tap the left surface |
| ANC OFF | tap and hold the left surface for more than 2s |
| ANC ON | tap and hold the left surface for more than 2s |
| ANC NAR Mode OFF | tap and hold the left surface for more than 5s |
| ANC NAR ON | tap and hold the left surface for more than 5s |
| Start pairing manually | tap and hold both surfaces for more than 3s |
| Reset pairing table | tap and hold both surfaces for more than 10s |
Specifications:
- Product Name: TWS Earphone
- Model: Grell TWS-1
- BT Device Name: STX01-EVT
- Active noise cancellation: 2 microphones per side
- Connection Distance: 10 – 30 meters (dependent on environment)
- Bluetooth Version: 5.2
- Frequency Range: 20 Hz ~ 20 KHz
- Battery Type: Li-ion Battery
- Capacity: 60 mAh （earphone）/ 770 mAh （charging case)
- Weight 7 gram (single earphone)
