This is perfect for outdoors. You can here external noise without compromising the quality of sound. I have Sennheiser, House of Marley, JBL, Skullcandy. No doubt all of them are best in their world. But while roaming outdoor, I was not able to use them, as they isolate me from outer world completely. And thats risky. I use them in home. But this one, perfect for running, riding bike (only for talk), cycling. Comfortable, clear sound, clear call quality, superb design. Just the best of its type. Best of all its 100 percent supported with almost all the devices. I use with Lumia. On the Five star scale: Sound: 4 Comfort: 4 Build quality: 5 Design: 5 Utility: 5 Mic: 5 ( Person on other side can hear you loud and clear ) Value for money: 4 ( I feel it a bit over priced) N. B. : DO NOT LISTEN MUSIC WHILE RIDING BIKE AND CYCLE. STAY SAFE AND THE Japan's Victor Company.