Check the setting of answering method on your cell phone and confirm if need some setting when connecting the Bluetooth device.

What should I do if the computer says they need a driver or transmitter to connect the earbuds?

Here are some methods for your reference.·Download a Bluetooth receiver to connect(in the computer settings)·Kindly check if your computer’s Bluetooth version supports Bluetooth 5.0

How to adjust the volume by earbuds?

Long press L or R earbud to adjust the volume while playing music.# R earbud Volume +# L earbud Volume -The volume adjustment is not available when it`s connected to a TV and computer.

Why the earbuds does not hold a charge?

1.Check if the metal connector is dirty, try to wipe it softly with dry cloth, paperclip or paper towels. (sweat or humidity may also lead to disconnection )2.Please have the battery case fully charged at the beginning without putting the earbuds in.·Swap the left and right earbuds to charge for a try.·Put the left one in the right side of the case, so does the right earphone, which is put in the left side of the case.·Confirm whether it’s the issue of battery case after operating steps above. 3.Reset could solve many problems occurred.

NC7 Pro Hybrid Active Noise Canceling Earbuds-TOZO

Bluetooth 5.3 technology： Features with Bluetooth 5.3 technology, TOZO NC7 Pro supports HSP, HFP, A2DP, and AVRCP, which aims at enhancing transmission speed and offers you clear and transparent sound; that is, NC7 Pro has superior sound quality and a better signal, combined with low latency when listening to music or making phone calls within 15 meters.
Support TOZO APP：TOZO APP offers quick and easy access to Active Noise Cancellation mode and EQ mode switch, as well as the ability to save noise reduction intensity customized adjustment and EQ curve settings. It can be used to customize Gesture operations and perform OTA software updates on the product. Where you can become acquainted clearly with the Quick Guide and Product FAQ.
Active Noise Cancellation：Hybrid 3-layer Active Noise Cancellation, which reduces noises to 35 dB with FF+FB. 1. An outward-facing microphone detects environmental noises and cancels them with equal anti-noise. 2. An inward-facing microphone listens within the ear canal for internal sounds before producing anti-noise to cancel the left noise twice. 3. Ear caps exclude 90% of noise from entering the ear canal.
Integrated Triple Noise Cancelling Microphone：Triple microphone suppresses environmental noise with a triple microphone noise reduction system. Triple microphones capture your voice and isolate it from background noise, delivering in a quality call experience.
Charge on the go：The charging case can hold 2.5 charges for the earbuds. Playtime on a single charge lasts more than 10.5 hours at 50% volume, 6 hours with Active Noise Cancellation enabled, and a total of 32 hours with the 72mAH battery capacity charging case. Enjoy fast charging; it takes only 1.8 hours to fully charge the rechargeable case using a fast-charge USB-C cable or less than 2.5 hours using a wireless charger. Providing a simple charging method with no strings attached.

Bluetooth 5.3 technology： Features with Bluetooth 5.3 technology, TOZO NC7 Pro supports HSP, HFP, A2DP, and AVRCP, which aims at enhancing transmission speed and offers you clear and transparent sound; that is, NC7 Pro has superior sound quality and a better signal, combined with low latency when listening to music or making phone calls within 15 meters.
Support TOZO APP：TOZO APP offers quick and easy access to Active Noise Cancellation mode and EQ mode switch, as well as the ability to save noise reduction intensity customized adjustment and EQ curve settings. It can be used to customize Gesture operations and perform OTA software updates on the product. Where you can become acquainted clearly with the Quick Guide and Product FAQ.
Active Noise Cancellation：Hybrid 3-layer Active Noise Cancellation, which reduces noises to 35 dB with FF+FB. 1. An outward-facing microphone detects environmental noises and cancels them with equal anti-noise. 2. An inward-facing microphone listens within the ear canal for internal sounds before producing anti-noise to cancel the left noise twice. 3. Ear caps exclude 90% of noise from entering the ear canal.
Integrated Triple Noise Cancelling Microphone：Triple microphone suppresses environmental noise with a triple microphone noise reduction system. Triple microphones capture your voice and isolate it from background noise, delivering in a quality call experience.
Charge on the go：The charging case can hold 2.5 charges for the earbuds. Playtime on a single charge lasts more than 10.5 hours at 50% volume, 6 hours with Active Noise Cancellation enabled, and a total of 32 hours with the 72mAH battery capacity charging case. Enjoy fast charging; it takes only 1.8 hours to fully charge the rechargeable case using a fast-charge USB-C cable or less than 2.5 hours using a wireless charger. Providing a simple charging method with no strings attached.