Pure Monster Sound is a proprietary audio signature that delivers the full experience of live music. You have to hear it to believe it. Active Noise Cancellation The Monster Persona headphones with active noise cancellation utilize a digital noise cancellation algorithm. It enhances the performance of noise cancellation, allowing you to enjoy a quieter environment and focus more on your work, whether you're in an airplane cabin, in city traffic, or in an office. You can rest better and complete your tasks more efficiently. Fast Charging & Long Battery Life USB-C is now the most popular and modern connection for charging Monster Persona. It supports a 5-minute quick charge for 2.5 hours of playtime. With a full 1-hour charge, you can enjoy up to 30 hours of Bluetooth connectivity. To save more energy, you can turn off the ANC feature when not in use. Comfortable and Portable High-quality memory foam ear cushions and swiveling ear cups comfortably adapt to your ears, and the headband naturally conforms to your head. The foldable design and included carrying case make it great for travel.