CRYSTAL AUDIO NB2 Neckband Earphones User Manual
- June 5, 2024
- CRYSTAL AUDIO
Table of Contents
NB2 Neckband Earphones
Neckband Earphones
User Manual
Earbuds with 14mm drivers for loud and clear bass
Overview
Charge it
- Use the micro USB cable which is included in the package of the headphones.
- A different micro USB cable might not be able to charge correctly (or even not at all) the battery of the headphones.
Connect:
- the micro USB plug into the headphone’s port.
- the USB plug into any compatible USB device.
· While battery is charging the indication light is red.
· When battery has been fully charged the light turns blue.
A full charge of the battery takes 2h approximately 2 hours.
The headphones are automatically deactivated during charging process.
Use it
Music
Short press: Increase volume
Long press (3s): Next track
Short press: Play/Pause Long press (3s): Turn ON/OFF
Short press: Decrease volume
Long press (3s): Previous track
Calls
Short press: Increase volume
Short press: Answer/End call Long press (1s): Reject call Double Click: Redial
last outgoing call Short press: Decrease volume
4 blue
- The indication light turns blue, permanently.
- Connection is successful.
- Please turn the headphones off when not in use in order to preserve battery life.
- The headphones will connect to the last paired device automatically as soon as you turn them on.
- The headphones will be automatically turned off if they are not connected to a device within 3 minutes.
WARRANTY
The product comes with a 1-year warranty starting from the purchase date. Warranty is valid only with the original proof of purchase (receipt or invoice). This warranty covers only the repair or replacement of the device and it is effective only in Greece.
DECLARATION OF CONFORMITY
Radio equipment and telecommunications terminal equipment, Directive
2014/53/EU
Crystal Audio hereby declares that the product, NB2 Wireless Headphones, is in
conformity with provisions of the Directive 2014/53/U. The complete text of
the Declaration of conformity can be found on the following webpage:
www.CrystalAudio.com
Technical Specifications
Bluetooth Version: v5.0
Battery: 110mAh
Charge Time: 2 hours
Talk/Playback Time: up to 10 hours
Cable Length: 66cm
USB Cable Length: 50cm
Drivers: 14mm
Sensitivity: 105dB ± 3dB 32
Impedance: Freq.
Response: 20Hz-20KHz
Weight: 18g
WARNING
- Using the headphones at a high volume for an extended period might lead to hearing damage.
- This product is not a toy. Keep out of reach of children.
- This product is not waterproof. It should be kept away from any kind of liquids and places of extreme humidity, rain, snow etc.
- Low battery may lead to “Poor” or “Lost” Bluetooth connection.
- Do not overcharge the battery of the device.
- Avoid exposing the product to excessive heat sources such as fire, candles, radiators, direct sunlight etc.
- This product should not be treated as household waste. Please hand over to the applicable collection point for the recycling of electronic equipment.
Designed in Europe by Crystal Audio. Assembled in China with the highest
quality standards.
The Bluetooth® word mark and logos are registered trademarks owned by
Bluetooth SIG Inc. and any use of such marks by Crystal Audio is under
license.
w w w.C r y st a l Au d i o.c o m
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>