Description 1. ADVANCED ACTIVE NOISE CANCELLATION FUNCTION: Eliminates the noise you don't want to hear. Advanced active noise cancellation technology blocks out the noise in the airplane cabin, city traffic or a busy office, letting you focus on what you want to hear Bring your listening experience and peace of mind. 2. BALANCED SOUND & STRONG BASS: Clear vocals, precise guitars, excellent deep bass and crisp percussion, providing an immersive Hi-Fi sound that allows you to better enjoy your music. We try our best to provide customers with true-to-life sound quality. Always our company's goal and constant pursuit can wear without your head exploring anything due to the pressure. Ear cushions and stretchable headband ensure that the headphones fit perfectly and securely on your head. You can adjust the best angle according to your needs, headphones are ideal for your daily use! 4. LONG BATTERY LAST TIME: A built-in 600mAh lithium battery offers the advantage of ultra-low power consumption in Bluetooth mode . Once the over-ear headphones are fully charged, don't worry about the power failure problem in the long journey. 5. Color: Black / Brown / Black-Silver