Srhythm NC25 Pro NiceComfort 25 Pro Headphones User Manual

: October 30, 2023
: Srhythm

Srhythm NC25 Pro NiceComfort 25 Pro Headphones

Product Information

Product Name: NiceComfort25Pro (NC25Pro)

User Manual: Find the rhythm of your soul

Safety Instructions

Hearing Safety:

Headphones can’t be used during charging for your safety.
Don’t use the headphones for any other purpose while driving.
Please use cautiously and stop using headphone in dangerous situation.
Please do not listen for a long time at high volume to avoidhearing damage.
For your safety, please do not turn the volume too high while running outside to ensure that you can hear sound in your surroundings.
Clean only with a dry cloth.

Operation Safety:

Use original or certified cables for charging and voltage within 6.3V. Power will be cut off and start protection mode when the voltage exceeds 6.3V and within 36V. Headphone will be broken when the voltage over 36V.
Keep away from children to avoid danger from improper use.
Headphones can’t be charged or turned on in the extreme temperature. Please use headphones within.
Do not submerge headphone in the water.
Do not use corrosive cleaner/oil to clean headphone.
Turn off headphone Bluetooth and ANC function to save power when you do not use headphone.

What’s in the Box

Portable Carry Case*1
ANC Button Charging/ANC Indicator light
Multi-function Button Bluetooth Indicator light
NC25Pro Headphone*1
3.5mm to 6.35mm Piano Adaptor*1
Airplane Adaptor*1 (Only use for airplane)
Quickstart Guide (NC25Pro)
Type-C Charging Cable*1
Audio Cable*1

Function Details

Pair to the Second Bluetooth Device:

Please make sure that headphone is connected to the first Bluetooth device successfully and music is not playing.
Hold the Multi-function button until the headphone switch off and continue with the steps Easy Pairing (Let the headphone re-enter pairing mode, the LED indicator light will flash blue and red alternately).
Pair headphone with the second device according to Easy Pairing steps.
Return to the first Bluetooth device and pair it with headphone again. Now both of your devices are paired with headphone.

Voice Dialing:

Press both Volume Up and Volume Down buttons simultaneously to activate voice dialing function (compatible with iPhone Siri and selected Android voice dialing software).

Product Usage Instructions

How to Use

Use ANC Function:

Push the ANC Button to turn Active Noise Cancellation ON/OFF (the LED indicator light will be green when ANC ON).

Use Bluetooth Function:

Hold the Multi-function Button for 3-5 seconds to turn headphone Bluetooth on, then enter pairing mode. (the LED indicator light will be blue and red flashing quickly.)
Start your mobile phone Bluetooth and find headphone Bluetooth pairing name Srhythm NC25 Pro to click it to pair. (the LED indicator light will be blue flashing slowly after paired successfully.)
Hold the Multi-function Button for 3-5 seconds to turn headphone Bluetooth off.

Adjust Volume and Skip Songs:

Press to adjust volume.
Long press to skip to next/previous song.
Long press the Volume Up and Volume Down buttons for 5 seconds, or Multi-function and Volume Down Buttons for 5 seconds to clear the pairing.

Play/Pause Music or Answer/End Call:

Press the Multi-function Button to play/pause music or answer/end call.

Reject an Incoming Call or Dial out the Last Call:

Double-press the Multi-function Button to reject an incoming
call or dial out the last call.

Turn on/off the Low-latency Game Mode:

Press the Multi-function Button three times to turn on/off the low-latency game mode.

How to Wear

Adjustable Headband:

Adjust the headband to fit your head size.

If your headphone has no sound or the microphone is not working

Please make sure that the headphone is connected before starting software.

Safety instructions

Hearing safety꞉

Headphones can’t be used during charging for your safety.
DON’T use the headphones for any other purpose while driving.
Please use cautiously and stop using headphone in dangerous situation.
Please do not listen for a long time at high volume to avoid hearing damage.
For your safety,please do not turn the volume too high while running outside to ensure that you can hear sound in your surroundings.
Clean only with a dry cloth.

Operation Safety꞉

Use original or certified cables for charging and voltage within 6.3V.Power will be cut off and start protection mode when the voltage exceed 6.3V and within 36V.Headphone will be broken when the voltage over 36V.
Keep away from children to avoid danger from improper use.
Headphones can’t be charged or turned on in the extreme temperature. Please use headphones within the operating temperature range꞉ 32° F (0°C) – 113° F (45°C).
Do not submerge headphone in the water.
Do not use corrosive cleaner/oil to clean headphone
Turn off headphone Bluetooth and ANC function to save power when you do not use headphone.

What’s in the Box

At a Glance

How to Use

Use ANC Function

Use Bluetooth Function

Function Details

Easy Pairing

Hold the Multi-function Button for 3-5 seconds to turn headphone Bluetooth on,then enter pairing mode.(the LED indicator light will be blue and red flashing quickly.)
Keep headphone and your mobile phone as close as possible during pairing process.
Turn on your mobile phone Bluetooth. Search for headphone Bluetooth signal on mobile phone and click “Srhythm NC25 Pro” to pair.(the LED indicator light will be blue flashing slowly after pairing successfully.)
If you are asked for a password/PIN code during pairing procedure,please enter “0000” (four zeros).

Pair to the Second Bluetooth Device

Please make sure that headphone is connected to the first Bluetooth device successfully and music is not playing.
Hold the Multi-function button until the headphone switch off and continue with the steps “Easy Pairing”(Let the headphone re-enter pairing mode,the LED indicator light will flash blue and red alternately).
Pair headphone with the second device according to “Easy Pairing” steps.
Return to the first Bluetooth device and pair it with headphone again. Now both of your devices are paired with headphone.

Active Noise Canceling(ANC) ON/OFF
To turn on ANC, push the ANC Button up; (the LED indicator light will be green when ANC ON.)
To turn off ANC, push the ANC Button down; (the LED indicator light green color will be off when ANC OFF.)

Wired Mode
Headphone support AUX input for wired external audio source connection. Simply turn headphone
Bluetooth off and plug in the audio cable.For any ANC
Bluetooth headphone,it is still need battery power support for wired mode.
ANC also works in wired mode.Microphone only works in Bluetooth mode,not for wired mode.

Buttons can’t be used in wired mode (Except the ANC Button).

Voice Dialing
Press both “Volume Up” and “Volume Down” buttons simultaneously to activate voice dialing function (compatible with iPhone Siri and selected Android voice dialing software).

How to Wear

If your headphone has no sound or the microphone is not working
Please make sure that the headphone is connected before starting software

Airplane Adaptor Connection

Connect the Airplane Adaptor to audio socket(double holes) of aircraft seat,use 3.5mm audio cable to connect with your headphone and Airplane Adaptor.

Warning꞉
Only use for airplane,Can not be plugged into the power socket

Headphone Specification

LED Indicator Light

Pairing꞉ Blue and red lights flash alternately

Paired꞉ Blue light flashes

Playing꞉ Blue light slowly flashes

Charging꞉ Red light turns on

Full Charge꞉ Red light turns off or Blue light turns on

Battery Low꞉ Red light turns on with voice prompt

ANC ON꞉ Green light turns on

ANC OFF꞉ Green light turns off

Bluetooth OFF꞉ Blue and red lights turn off

Please kindly note that perhaps sometimes these LED indicator light color will be mixed to become other colors(pink,purple,etc.) occasionally.

Technical Specification

Product name꞉ Srhythm NC25 Pro
Battery capacity꞉ 750mAh
Input꞉ 5V/1A
Chip꞉ ATS3015
Charging time꞉ About 2 hours
Use time꞉ 40 hours (Bluetooth on + ANC off)
Bluetooth version꞉ V5.3
Bluetooth profile꞉ A2DP, AVRCP, HSP, HFP
Bluetooth range꞉ 10m/33ft
Waterproof rating꞉ IPX4
Net weight꞉ 204g/0.44lb
Impedance꞉ 32 Ω
Driver diameter꞉ Φ40mm
Frequency response꞉ 20Hz-20kHz

Charging

Use the included Type-C charging cable to connect to headphone Charging Port. Connect the other end of charging cable to a computer USB port or USB wall charger under 6.3V voltage.Turn off headphone Bluetooth and ANC function before charging. Headphones can’t be used during charging for your safety. The LED indicator light will be off or blue color when full of charge basing on headphone turn off status.
Start your mobile phone Bluetooth and find headphone
Bluetooth pairing name “Srhythm NC25 Pro” to click it to pair.(the LED indicator light will be blue flashing slowly after pairing successfully.)
Hold the Multi-function Button for 3-5 seconds to turn headphone Bluetooth off.

NOTE꞉ Ambient temperature exceeds the charging temperature range of 32° F (0°C) – 113° F (45°C).

If any issues, here tips for you꞉

Full charge your headphone with original USB-A to USB-C charging cable ( not USB-C to USB-C cable)and 5-10W power wall charger (don’t use fast charger)
Reset headphone by inserting audio cable into headphone audio socket then removing it. Or the upgraded NC25 Pro headphones would be reset automatically when charging.
Delete Pairing꞉ Hold both “Volume Up” and “Volume Down” buttons simutaneously for 5 seconds. Or hold both Multifunction Button and “Volume Down” Button for 5 seconds.

Q&A

Q꞉ Why can’t headphone pair with my mobile phone?
A꞉ Please check if your headphone is in pairing mode or reconnection mode,check if Bluetooth search function of your Bluetooth device is turned on,if all done,then go to Bluetooth menu of your Bluetooth device,delete/ignore the headphone Bluetooth pairing name “Srhythm NC25 Pro” . After that,you can try to reconnect Bluetooth according to above “Easy Pairing” steps.
Q꞉ Why can’t headphone turn on?
A꞉ Please double check the battery status of your headphone.
Q꞉ Can I replace battery in the headphone?
A꞉ No,you can not.Headphone uses a built-in non-detachable Li-Polymer battery that can’t be replaced.
Q꞉ Can I use headphone while driving?
A꞉ For your safety,we strongly recommend that you do not use headphone while driving to avoid distraction.
Q꞉ Why does headphone sometimes disconnects with Bluetooth device within 10 meters?
A꞉ Please check if there are any metal materials or obstacles within a relatively close range or your surroundings that perhaps interfering with Bluetooth connection.This may happen because Bluetooth is a radio technology which is sensitive to objects between headphone and other devices.
Delete the Bluetooth pairing name on your ALL devices(it will toggle between your connected devices due to multipoint connection),restart it.then reset your headphone by inserting the included audio cable into headphone audio socket and removing it(sometimes need to insert several times to reset successfully),then reconnect it.
Q꞉ Why can’t I hear any sound from my computer or mobile phone?
A꞉ Please check if output channel of your computer supports A2DP profile.Also check the volume settings on your headphone and computer/mobile phone.
Q꞉ Why am I unable to use headphone to control the volume of a track playing on an APP on my mobile phone?
A꞉ Due to configurations of different application software,headphone may not be completely compatible with some APPs.
Q꞉ What do I do if Bluetooth can not close or open?
A꞉ Please reset Bluetooth function of headphone by inserting an audio cable into headphone audio port, then removing it. Before re-connecting,kindly remember to delete/ignore headphone Bluetooth pairing name “Srhythm NC25 Pro” on your mobile phone.
Q꞉ Why does Bluetooth turn off when I connect an audio cable?
A꞉ This is one of our special features. When users insert an audio cable into headphone audio port, all Bluetooth feature buttons stop working and Bluetooth turns off. But,Bluetooth will be available again when audio cable is moved.
Q꞉ Why does audio quality become poor on Windows PC?
A꞉ Some customers have mentioned poor audio quality on Windows
PC. Please note that there are “Headset” and “Headphone” modes you can toggle by changing your output device. Selecting “Headphone Mode” will drastically improve the audio quality.
“Headset Mode” is designed for highly compressed VOIP calls,etc.
That’s not the fault of headphone product, that’s just the limitation of that protocol. If you are in “Headphone Mode” ,the audio quality is fantastic.
Q：Why is the headphone sound so low?
A꞉ Increase both device and headphone volume. For some software such as SPOTIFY,you may need turn the equalizer to OFF,then the full spectrum come through and the volume will be easily adjustable.

FCC Caution꞉
Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions꞉ (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

IMPORTANT NOTE꞉

NOTE꞉ This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures꞉

Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.

FCC Radiation Exposure Statement꞉

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment .This equipment should be installed and operated with distance ＜5mm between the radiator& your body.

ISEDC warning

This device complies with Innovation, Science, and Economic Development Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions꞉
(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

The device is compliance with RF exposure guidelines, users can obtain Canadian information on RF exposure and compliance. The distance from body to use the device is ＜5mm.