- The Active noise cancelling on this Groov-e Harmony headphones blocks out background noise, so you can focus on your tunes - You can plug in with the 3.5 mm jack or go wireless with the Bluetooth - you've got both options - With 25 hours of playtime on a single charge, you can go ahead and jam out all day long - Answer your calls on the go with the built-in microphone - They're foldable, so you can pack it up and take it along with you