Crystal Acoustics BT4 User manual

On-ear Headphones
User Manual
BT4
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.
BT4
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.
Overview
On/Off
Activation/
Disactivation
micro USB
Charging port
User
Manual
USER
MANUAL
micro USB
charging cable
Microphone
Built-in HD Mic
LED light
Indication Aux In
Auxilliary input
Control buttons
for Calls & Music
Rotating
Earcups
Flat Folding
Mechanism
Technical Specifications
Bluetooth Version:
Battery Capacity:
Charge Time:
Talk/Playback Time:
AUX Cable Length:
USB Cable Length:
Drivers:
Sensitivity:
Impedance:
Freq. Response:
Weight:
v5.0
300mAh
≈ 2 hours
up to 10 hours
120cm
50cm
40mm
105dB ±3dB
32Ù
20Hz-20KHz
140g
D & J DAMKALIDIS SA
44 Zefyrou str., P. Faliro, PC 175 64
Support: 210 9410888
email: [email protected]
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.
Designed in Europe by Crystal Audio.
Assembled in China with the highest quality standards.
www.CrystalAudio.gr
NOTE:
The earcups rotate in one direction only.
If they are forced to the opposite
direction they could be damaged.
*
*

Use itCharge 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.
• While battery is charging
the indication light is red.
• When battery has been
fully charged the light
turns blue.
red
blue
Connect it
• 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.
• Activate Bleutooth mode
on your BT device.
• Search for available devices and
select CRYSTAL AUDIO BT4.
3
CRYSTAL AUDIO
BT4
2h
A full charge of
the battery takes
approximately 2 hours.
The headphones are
automatically disactivated
during charging process.
Connect:
• the micro USB plug
into the headphone’s port.
• the USB plug
into any compatible USB device.
CallsMusic
Short press:
Next track
Long press (3s):
Increase volume
Short press:
Previous track
Long press (3s):
Decrease volume
Short press:
Play/Pause
Short press:
Increase volume
Short press:
Decrease volume
Short press:
Answer/End call
Long press (3s):
Reject call
Double Click:
Redial last outgoing call
3s
• Long press (3 seconds)
the On/Off button to
activate (or disactivate)
the headphones.
• Once turned on, the
headphones enter
automatically into
Pairing mode
1
• The indication light
is flashing red-blue,
alternately.
2
• The indication light
turns blue, permanently.
• Connection is successful.
4