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    NT01AX HDSS® True Wireless Stereo Earphones



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  • feature
  • NT01AX Specification
  • FAQ

True wireless earbuds with stable connection and long continuous playback

NT01AX/NT01A has solved the true wireless earbud’s problem by using the latest Qualcomm SoC, which greatly improved the connection stability, sound quality and extended the playback time. Moreover, the remote control by the earbud’s button, high-speed charging, IPX4 and other functions which are convenient for daily use, NT01AX/NT01A is the best true wireless earbuds in the new era.

Resistant to sound drop-out

By combining the newest Bluetooth 5 SoC「QCC302x」from Qualcomm inc.and our original MCA(Mutual Coupling Antenna)technology, we realized high connection stability.


Continuous 10 hours long playback

A single charge gives the earphone a continuous playback for over 10 hours.By the Role Swapping function, the battery level higher one will be the master automatically to prevent the uneven usage of battery to achieve a longer playback time.


Compatible with Qualcomm aptX audio

By using smartphone or digital audio players equipped with aptX codec, you can enjoy less delay and higher sound quality playback.NT01AX has equipped the Qualcomm's "TrueWireless Stereo Plus" function. By using a compatible smartphone, the left and right earphones are connected to the smartphone independently.

* The battery consumption will be higher when using aptX codec.


Adopting graphene driver and HDSS

The vibration plate of the driver is coated with graphene which is a carbon material harder than diamond. This full range dynamic single driver is excellent to reproducibility and responsiveness of high range. By adopting the patented technology "HDSS" that reproduces clear sound quality and wide sound field. This prevents in-of-head sound localization caused easily by canalled type earphones, reproduce thick and wide natural sound extent.


Compatible with volume and next/prev control

Operation button of earphones are compatible with smartphone remote controller.
Music playback operation (play/pause/next/prev), volume control (UP/DOWM), and incoming call operation (response/reject/end) are available.
It loads high sensitivity microphone, and calling and voice control and Siri/GA etc voice command are available.

*The microphone will be switched automatically by the Role Swapping function.


Up to 35 hours battery life combine with charging case

Battery case can fully recharge empty NT01AX/NT01A 2.5 times, you can enjoy music over 35 hours with the charging case.Corresponds to high-speed charging, earphone will be fully charged in 1.5 hours. Only a 15 min. charge will give you up to 2hr. of playtime. The easy open one push button had improved so that the case lid will not be opened accidentally.


Compatible with both ear playback on the call

By “Voice in the Both Ears” function, no delay will occur in both ears. The microphone has installed the cVc noise canceling function, generate a clear stereo phone call experience.


Power saving function

During playback the indicator LED turns off to save power. While the music is stopped or in standby state the LED flash to remind you to switch it off.Even if you forget to turn off the power, the earphones will be automatically set to OFF when the connection is dropped.


Sleep mode and automatic reconnection function

When the earphone is placed in the charging case and got fully recharged, it will go into sleep mode automatically to stop the battery consumption of the case. With automatic reconnecting function, earphones in the case will be automatically turned on and be connected when the lid is opened.

IPX4 water resistance

Applying water repellent treatment by nano-coating inside the earphone give a water resistance rate level IPX4.

Unique design

Asymmetric design helps you distinguish which side you are wearing. Buttons on top make it easy to press even with long fingernails or gloves on, also without pressuring your ears while controlling.

  • NT01AX Specification
  • FAQ

NT01AXHDSS® True Wireless Stereo Earphones

Accessories Battery case x1
Chagrin USB cable x1
Earpiece(NUARL standard):L/M/S x2each
SpinFit ear piece(CP350):L/M/S x2each
Ear loop:L/S x2each
Pouch x1
User’s guide
(Earphone x 1) W26.0 x H25.2 x D28.2 mm (excluding tips)
(Recharging case) : W59.1 x H42.0 x D34.2 mm
(earphone x1) about 5g
(recharging case) about 35g
Continuous Playtime
about 10hr(SBC/AAC)about 7hr(aptX)
Continuous Speaking Time
about 15hr
Recharging Time (Max)
about 1.5hr
Charging case capacity
Playback up to 35hr use with charging case
Bluetooth Spec.
Ver.,5.0 / Class 2 /Multi-pairing(3)
Bluetooth Profile
Bluetooth Codec
“Graphene” Dynamic Single Φ6mm (with HDSS)
Frequency response
20~20,000 Hz
Water Resistance
equal to IPX4
Omni-directional / cVc noise canceling installed.
Environmental Temperature
5-50 degrees C (without frost)

FAQ(Update on 2019.11.8)

The difference between NT01AX and NT01A

NT01AX comes with SpinFit Cp350 eartips and pouch. The playback volume of NT01A had been reduced too. The chipset used in NT01AX is QCC3026, and NT01A will be changed to QCC3020, there is no difference in the performance of QCC3026 and QCC3020. Moreover, the charging port of NT01AX charging case is micro-B, and NT01A will be changed to USB Type-C. Also the surface coating will be different, but the charging time and capacity do not change.

Cannot hear any sound from the earphone when pairing with Android 9.

NT01AX purchased before 15th Jan 2019 could install a firmware updated to solve the problem. NT01AX purchased after 15th Jan 2019 had installed the update already.

One side no sound

Please place the earphone back in the charging case and take them out again.

LED flash white quickly

The earphone has been set to pairing mode. Reset the earphone can solve the problem. After resetting the earphone, the earphone will return back to the factory state. Please delete the pairing item (NUARL NT01AX-L / NUARL NT01AX-R / Headset) in the Bluetooth list on your smartphone before pairing to the smartphone again. When placing the earphone back to the charging case, the ear loop need to be place back into the ear loop’s space of the charging case, otherwise the button may be accidentally touched when the charging case is closed

How to reset the earphones?

Set the earphones into the charging case, don't close the case. Press the earphone down till the LED flash orange and press the earphone button, when the LED goes out (it may takes for about ten seconds) release your hands, the left and right earphone will flash white and reset automatically. After the reset completed, the LED will flashing orange/white and returned to the factory state.

The earphone do not automatically turn on/off when it is take out / placed in the charging case.

When the power of the charging case is insufficient, the automatic ON/OFF function will not work properly. Please turn on/off the earphone manually.

Continuous playback time is shorter than the one written on the manual

The continuous playback time varies depending on the environment, music, and volume of the earphone. Using aptX decoding will consume more power than using other decoding.

The sensitivity of the microphone is bad

Please adjust the position of the ear loop to ensure that the microphone did not block by the loop. The microphone will activate on the master side only, on the Bluetooth menu of your smartphone you can notice which side is master.

The function of the master and slave of the earphone has been changed every time when the earphone is turn on.

The master function of the earphone will automatically switch when it is taken out from the charging case. The side which battery level is higher will be the master and the side lower will be slave. The master side earphone will be displayed as "Connected successfully" on the Bluetooth menu of your smartphone. The automatic role switching only switch the master/slave function, the button operations of the left and right headphones will not be switched.

When pairing with computer the sound is strange.

The Bluetooth connection equipped in computer is not optimized for playing music, which will cause problems such as intermittent sound and distortion of sound easily. Moreover, the use of other Bluetooth devices such as mouse, keyboard, etc., may also cause interfere with each other. If you are using MacBook series, you can improve the connection by resetting the NVRAM (PRAM) and use AAC to connect with the earphones.

Can I use other ear tips?

The ear tips of SpinFit CP100Z/CP350 have been confirmed can be use normally. Other ear tips are not guaranteed to work properly. (The earphone diameter is 5.6mm)