Truth be told, I haven't reviewed a bone-conduction headphone for several years. The reason for that was the early models I tested from AfterShokz sounded so bad it was hard to recommend them to anyone.

The AfterShokz Trekz Air is a slimmed down bone-conduction headphone that offers improved sound and is very comfortable to wear, leaving your ears open to hear the outside world; It works well as a headset for making cell-phone call and comes with a nice carrying pouch

While the sound quality is improved; it's still not as good as what you'd get from a comparably priced "traditional" headphone

Weathering both salty sweat and the daily gym-bag battering, Trekz Titaniums are perfect for fitness.

Fast recharge time; Quick; easy equalizer; Great volume range; Sweat-proof fit; Tough construction

Tight on larger heads; Difficult to wear with gear; No previous track command

Bone conduction technology has been around for a while, even before Beethoven pressed his ear against a piano and clasped a rod in his teeth to hear his compositions. But AfterShokz is bringing it mainstream to the active community with the new Trekz Titanium (MSRP $130) wireless headset.

Like many people I commute to work on a bicycle. One of my biggest problems, besides dodging inattentive drivers, is being able to listen to music while still being able to hear traffic around you. I'm pretty much stuck with one option and only one option. A Bluetooth speaker.

Product is super light weight and comfortable to wear. The bone-conduction method leaves your ears free, so you can listen to music and run or bike (or even just sit at your desk at the office) and still hear what is going on around you. Sound quality is solid, controls work really well.

My boyfriend and I bought them for each other. We like them. Have noticed that you should not lean your upper jaw on your hand while talking.... dead ends the souls for the person trying to hear you talk. Love that it's not screeching in my EAR. Comfortable to wear. Sound quality is fine.

Do you exercise or commute in magnificent isolation? Blocking-out ambient noise is the best way to immerse yourself in your music. If you're working out in a gym then that's all fine, but if you're out on a run in an urban environment, or commuting through busy streets and stations, you do actually...

Exacting design; Comfortable & stable fit; Flexible & lightweight; Helps situational awareness

Low volume; Ear 'tickle; Sound quality is lacking; Short battery life

Cycling while wearing headphones isn't advised. Yet everyday, in the city especially, chances are you'll encounter at least a few cyclists wearing either in-ears or over-ear cans in place of a helmet. Road safety be damned.

Bone conduction works well; Great level of situational awareness; Reasonable battery life

Slightly uncomfortable after prolonged used; Sound leakage; Lacklustre sound quality

The main issue is when wearing a jacket, the headphones get pulled around behind the neck and makes it uncomfortable and difficult to look behind. This is really bad when you need to look around often through the city. Also not great with a helmet, but it's acceptable.

I am a runner and I bought this wireless headphones. They are meant to vibrate on the temple bone but they gives me headaches and I cant hear clear music. Bringing away from the bone to the ears sounds better but the headphone float at the back of the neck moving in rocking motion during exercise.