The extra quality driver is fighting the device’s internal auto-shutoff. Download the Jieli BR21 Config Tool (available on 4pda forums). Set "Idle Timeout" to 0 (Disabled).

Generic drivers do not properly optimize the audio buffer, causing a noticeable delay between a video on your screen and the sound in your ears.

Right-click the speaker icon in your taskbar > . Under Input and Output , select JieLi BR21 . Troubleshooting Common Issues

The Jieli BR21 is a highly popular, low-cost Bluetooth microcontroller chip found in millions of wireless headphones, portable speakers, and car audio adapters. While these chips offer incredible value out of the box, finding the right "extra quality" driver and configuration is the secret to unlocking their full potential.

Even with the perfect driver, Windows may fight you. To guarantee the "extra quality" experience, perform these tweaks:

Check the retail box, user manual, or the physical sticker on your device for a brand name and model number.

Drop down the Default Format menu and select the highest option available (usually ). Click Apply and then OK . Disable Audio Enhancements

Disable the option if you do not need the microphone. Bluetooth Signal Drops Frequently

Windows power management is turning off the Bluetooth module.

JieLi Technology manufactures highly integrated, low-power Bluetooth and multimedia processors. The BR21 series is commonly integrated into: Cheap USB Bluetooth dongles (often generic or unbranded) Wireless headphones and earbuds Portable Bluetooth speakers Car audio Bluetooth receivers