Crystal is a Bluetooth headset equipped with ANC, which stands for "Active Noise Cancellation." This innovative technology significantly reduces ambient noise and makes your voice clearer during phone calls while ensuring optimal listening for the other party. Each headset is equipped with two microphones, one for speech and one for noise. Crystal also features a low-latency function that guarantees synchronization between sound and image on the screen, allowing you to enjoy an ideal listening and gaming experience. The low-latency function, volume, and calls are controlled directly via touch on the headset, so you don't need to take your phone out of your pocket. Crystal is designed to accompany you everywhere, with a playtime of 3.5 hours and the ability to recharge it up to four times for a total of 14 hours of freedom. When you take the headset out of the case, it automatically connects to your device. With the double-master function, it is possible to use just one earbud, saving battery power. The capsule shape ensures optimal comfort, with the earbud fitting perfectly in the ear and delivering high-quality sound with rich, deep bass.