Support Center

The total battery life is 54 hours, and the charging case can provide up to 10 hours of use on a single charge.

Pair the earbuds with the QCY app on your phone to check the battery level.

Your headphones may be out of power. Please use a 5V charger to charge them for two hours.

Due to different usage habits and varying battery health between the left and right ears, it is normal for there to be some difference in battery consumption between the two earbuds during use.

With the earbuds inside the charging case, open the case and press and hold the button on the charging case for 10 seconds. The charging case will then flash red and white lights alternately for 3 seconds. Once the flashing stops, the reset is complete.
After restoring factory settings, connect using the initial pairing method and use normally.

Please reset your headphones and then reconnect them; you should be able to find them.

No, they cannot. The ear clips can be connected to two devices at the same time using Dual Connection, but they can only play audio from one device at a time.

Yes, they can be used directly upon being taken out of the case, including when only removing a single earbud.

To connect two devices:
1. Pair the headphones with device A.
2. Disable Bluetooth on device A, and the headphones will enter pairing mode.
3. Pair the headphone with device B.
4. Re-enable Bluetooth on device A and reconnect to the headphones.
After this initial setup, the headphones will automatically connect to both devices next time.

1.Cleaning the Contact Pins:
Ensure the charging case is unplugged from any power source.
Clean the charging contacts of your earphones and charging case with a cotton swab dipped in alcohol.
2. Cleaning the Earbud Filters:
First,remove the ear tips from the earbuds
.Use a soft-bristled brush to clean the dust filter/sound vent of your headphones.

1. Use your earbuds regularly to avoid battery over-discharge. Aim to use them at least once a month.
2. Charge the earbuds after each use, and don't wait until they drop below 20% to charge.
3. Open the case at least once a month to check that everything works, and charge the case monthly
4. Clean the charging pins on both the earbuds and case regularly.
5. Keep the ear tips clean and wipe the metal mesh with rubbing alcohol.
6. lf they get wet, use a hairdryer on the 'cool' setting to dry them.

We offer various ear tip sizes to ensure a good fit. To find the best fit:
1. Make sure you're wearing the correct earbuds (check the L/R logo).
2. Try different ear tip sizes.
3. Twist the earbuds slightly to find the most secure and comfortable position.

Unfortunately, due to issues related to shipping costs and customs fees, we are unable to sell the charging case separately.

1. The HT18 boasts ultra-high-definition Hi-Fi sound quality. Our HT18 utilizes MEMS speakers, significantly enhancing high and ultra-high frequencies. However, this high-frequency enhancement somewhat limits the HT18's high-frequency noise cancellation performance.
2. Please use a different noise cancellation mode on the QCY app (not adaptive). This will achieve the same effect as the HT08.
If the noise cancellation is still ineffective, you can disable adaptive noise cancellation mode and switch to 'Noisy Mode' in the app, adjusting it to the maximum noise cancellation depth.
Adaptive mode adjusts the noise cancellation depth based on environmental conditions (higher ambient noise, deeper noise cancellation; lower ambient noise, shallower noise cancellation), providing a more comfortable noise cancellation experience and reducing ear pressure discomfort in suitable environments.

Cleaning the dust fiter:
Use a dry toothbrush to gently clean the dust fiter on the earbuds. Make sure not to apply too much pressure to avoid damaging them

Your headphones may not be synced. Please reset your headphones.