User Guide

Cirtek Wireless Earbuds
Active Noise Cancelling
What is ANC ( Active Noise Cancelling )?
Active Noise Cancelling technology to achieve the high
performance of noise cancellation in the environment especially in
the subway, on the bus and other noisy public trafic environment.
These earphones can cancel a maximum 28dB of ambient noise,
meaning they prevent almost up to 80% of the noise,better to
focus on your own audio.
If you don't want to use the active noise cancelling function, you
can choose to turn it off.
Double-click the L earphone twice. When you hear "ANC off",
you have turned off the ANC function.
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