Crystal Acoustics BT4 Quick Start Manual

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