IMMERSIVE HI-FI SOUND: Improved 40mm sound-stage drivers deliver true-to-life audio with rock-solid bass, super-crisp treble. Engineered with CVC 6.0 noise cancellation, Tribit XFree Move headphone offers you with crystal music and lifelike phone call experience, The moment you put it on, you definitely will be absorbed in your sound world. COMFORTABLE DESIGN: The memory-protein cushioned earmuffs and adjustable slider ensures your lasting comfort. Lightweight and slim design make Tribit XFree Move bluetooth headphone as an ideal option for your travel or trip. Various brilliant colors for choice make you the spotlight in the crowd whether you are walking in the street or travelling across the world. LONG PLAYTIME & NEVER POWER OFF: Built in 220mAH Lithium-ion battery, this bluetooth headset supports 14-hours of continuous playtime on one single charge, which simply means you could absorb more time enjoying and less time charging. You can also use it as a wired headphone with the provided audio cable plugged into your earphone jack so the headphones will never power off.