We paired the Marque M155 with the Apple iPhone 4. Pairing was quite painless, but if you need even more help pairing your headset, the Marque M155 provides a voice-guided tutorial once you turn it on. It'll ask you if you have an iPhone or an Android handset, as it has tutorials tailored for those operating systems. Again, when paired with an iPhone, the smartphone shows a battery life indicator for the headset next to its own battery meter.
Listening to audio was a treat. Audio quality was rich, full, and sharp. It's certainly not as good as a pair of stereo headphones for music, but for listening to podcasts and audiobooks, it's just fine.
Call quality wasn't as good, however. While our callers sounded natural, loud, and clear, they weren't too happy with us. In a quiet room or a moving car, we sounded decent enough, but in a noisy outdoors environment, they heard plenty of distortion and background noise. They had to ask us to speak up several times.
The Marque M155 is a stylish and fashionable headset, especially for the iPhone crowd. A2DP audio quality is good and it has a very comfortable fit. If you're looking for a headset primarily for indoor use, the Marque M155 should work fine. But if you plan to be outdoors a lot, you should plan on not taking many calls on it, as it doesn't have very good noise suppression.