1. Low power consumption allows our Bluetooth headphones to play continuously for up to 80 hours in standard music mode, up to 48 hours in ANC mode. With the included audio cable, you can also switch to wired mode when the power is off, no more power shortage problems. 2. The foldable and adjustable design makes our headphones fit different head sizes. Bluetooth 5.3 wireless connection technology enables fast and stable connections within a range of 10 meters. For devices with Bluetooth enabled or 3.5mm audio jack. 3. Noise-canceling headphones use noise-canceling technology that can detect and eliminate a wider range of low- and mid-frequency noise, such as car and airplane engines and busy offices. 4. A 40mm large dynamic audio unit creates a wide, vivid sound field. Balanced audio quality technology, excellent performance across the entire frequency range. Rich in sound details. 5. The package includes a foldable headset, a carrying case, a 3.5mm spare audio cable, a charging cable and a user manual.