1、NOISE REDUCTION: Bluetooth headphone supports active noise cancellation, turn on ANC mode to detect external noise and effectively reduce up to 90% of the noise. It also supports call noise reduction, which can provide clear calls in noisy environments. 2、40MM DRIVER: The noise canceling over ear headphone has extra large 40mm dynamic driver to bring you clear and shocking sound, providing better treble and bass performance for more details. 3、LONG BATTERY LIFE: With a battery life of about 40 hours when ANC and Bluetooth modes are on, and about 50 hours in normal Bluetooth mode, you can wear your Bluetooth headset for a calm commute. 4、DUAL PLAYBACK MODE: Supports both Bluetooth and 3.5mm AUX playback modes. It can connect to your phone via Bluetooth 5.3 for a stable connection within 10 meters. Or connect your device via 3.5mm AUX sound cable to become wired headset. 5、COMFORTABLE AND FOLDABLE: The headphone is made of comfortable protein leather and memory foam ear cups for enhanced sound isolation. Ergonomic design for long term use. Folds flat and fits perfectly into the travel bag. Item Type: BT Headphone Material: ABS BT Standard: BT V5.3 Effective Range: Approx. 10m/32.8ft ANC Frequency Range: 20-600Hz ANC Noise Reduction Value: -20 ± 3db Operating Frequency: 2.402GHz-2.480GHz Driver Unit: Approx. 40mm/1.6in Battery Specification: 3.7V 500mAh Lithium Battery (Included) Charging Voltage: 5V 1A Charging Time: About 2.5 Hours BT Endurance: About 50 Hours Noise Canceling Battery Life: About 60 Hours Bluetooth Plus Noise Cancellation Battery Life: About 40 Hours 1 x BT Headphone 1 x 3.5mm AUX Sound Cable 1 x Charging Cable 1 x Instruction Manual