Active Noise Cancellation -- aimed to cancel out lower-pitched noise, removes distracting surrounding noises, listen to your music at a lower (and safer) volume, just by pressing ANR button to turn on the active noise cancellation mode

Foldable design to make unit more convenient when travel or to use outdoors, packaged with travel pouch. -Adjustable and curved fit headband design, 90 degree swiveling earcups gives you more comfort and durability. 

Wireless or Wired Connection- Stable Bluetooth connection, or AUX port with 3.5 mm jack cable 

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• Bluetooth version: 4.0
• Talk time/Music playtime: 10/10 hours
• Battery capacity:360 mAh, charging time 2.5 hours
• Rated power: 10 mW
• Impedance: 32Ω 
• Sensitivity : 42±3dB 7. Wireless range: 33 ft/ 10 meters 8. Handsfree