• Equipped with renowned noise-canceling technology: Combining advanced calculations and physical sound insulation to achieve silent wireless headphones in a quiet environment, separated from surrounding noise The noise-canceling feature creates moments where you can enjoy music with your whole body • Premium Comfort: Soft ear cushions that gently fit your ears are perfect for long listening sessions Providing a firm fit and comfortable wearing experience, some parts of the headband use steel to optimize strength and feel The bottom of the band features soft protein leather-treated foam, allowing you to enjoy comfortable and wireless headphones in a stylish way • Two listening modes: This wireless Bluetooth headphone features Quiet Mode and Aware Mode, allowing you to easily switch between complete noise cancellation and a level that also recognizes ambient sounds • High Fidelity Audio + Adjustable Equalizer: This wireless headphone offers high fidelity (Hi-Fi) audio and an adjustable equalizer, allowing you to emphasize bass, fine-tune treble, and balance mids for the sound you desire • All-day battery life: The Bose QuietComfort wireless headphones offer up to 24 hours of continuous playback on a single charge Moreover, a 15-minute quick charge provides up to 2.5 hours of playback