Silhouette CAMEO 2 Starter Bundle with Heat Transfer Kit, 2 Cutting Blades, Pixscan Mat, Metallic Pens, Starter Guide, Tools and More Active Noise Cancelling-- Cancel out background noise up to 32dB at Frequncy Range 20-2000HZ, Built-in the best Noise Cancelling Headphones Chipset AMS3421 inside which can reduce 99% of ambient background noise,Reduce distracting background noise such as the roaring of plane/bus/track/train engines etc,With rich bass, balanced and clear sound, will gives you an unforgettable audio experience. Bluetooth V4.1 Wireless Technology- Offers a Faster, More Energy Efficient Connection,Maximum pairing range can be 33ft ,, so You Can Listen to Music for up to 6 Hours.work with all smartphones, tablets and music players.Allows Skip/Play/Pause on your music tracks as well as all phone use without reaching your phone. OTG Magnetic Charging-- Charge through all your devices. You can charge HE8 earphones on all devices such as computer (USB), AC-adapter (USB), Android (micro-USB). By using 3% of your Android phone battery capacity to FULL charge your HE8 you get 11 hours of ANC, 5 hours of music, and 60 days of standby. You can also plug into your Android phone and listen while charging, often called "OTG" On the go charging. Hands-Free Calling with Integrated Microphone --Answer in ease, the in-line mic and control switch allow you to pick up, hang up and chat in peace, as well as all phone use without reaching your phone.all without having to even take your phone out of your pocket.