Active Noise Cancellation: Keeps you focused at your physical limit— whether running or at the gym, you’re in control; wind guarded mic monitors ambient noises, filtering them out for improved focus SurroundSense: Keeps you on top of what's going on outside of your earbuds; wind guarded microphone monitors ambient noise, mixing it into the audio signal for increased spatial awareness Earthproof durability: IP68 waterproof, sweatproof, and dustproof, with MIL-STD 810G freeze, shock, and impact-resistance; Vista 2 is designed to survive and perform and is real-world tested Premium sound: 6mm milled drivers, active noise cancelling earphones, and customisable EQ profiles to own your sound Sport fit: These buds stay in your ears, thanks to the 3 sizes of interchangeable ear gels that let you find the most secure fit during running, cycling or whatever suits your active lifestyle