mANY OF THE NEWER BIKES DO NOT HAVE THE NARROW TUBES THROUGHOUT THE FRAME ANYMORE AND SO IF YOU ARE CARRYING OLDER BIKE IT WOULD WORK WELL BUT ID YOU HAVE NEWER AERODYNAMIC STYLES OR HIGHER END BIKES THEY WILL BREAK. Every now and then the blinding flash of this head mounted Neualyzer would coincide with the thunder and lightning audio playing through the speakers now nestled into the glands on my neck. But now, two years later, they are $78??? Thats crazy. That was youll be able to store your workouts on the internet and see it in detail on your browser. Its a little heavy which is good because if you have it on full blast the bass alone makes this speaker shake on a table. In the manual is says CO and combustible gas detector. Buy a size larger if you have wide feet. 100% original and $30 dollars cheaper than Nordstrom or Macy’s I highly recommend buying this product from amazon Im very pleased The sound quality is very good, but i feel they could be a little bit crisper. On top of that they are very reasonably priced.