Parrot Zik 2.0 enables you to enjoy Bluetooth v3.0 calls hands free and in high definition. The sound quality is improved with HD Voice. Users can enjoy clear conversations, with voices that sound much more natural. Your smartphone as well as your telephone services provider must be compatible with HD Voice. To ensure music is heard in all its harmony and depth, Parrot Zik 2.0 audio playback offers a digital 32 bits audio processing. The frequency of the signal is fully customisable with the 5 band Pro-equalizer available on the free and specially designed application Parrot Zik 2.0. The headphones have a powerful digital sound processor (DSP). The Concert Hall effect externalises the music and reproduces the sound of a real stereo system. Several concert hall acoustics are reproduced for a harmonious and more natural listening experience, which also reduces tiredness during long listening sessions. The Parrot equaliser is a new, quick and intuitive way to equalise your music, enabling infinite possibilities.