Here is why this is worth it,Comparing it to the firefly it is 2 times brighter, 2 times bigger, and 10times more comfortable. Not as durable as the $50 to $80 sets out there but those I saw on that range were metal and I wasnt looking that high in price for now. Certainly better battery life than I expected, especially after seeing a few negative battery opinions. The product does not support my mountain bike. I also suggest the "security bolts" be replaced with 1/2"-3/4" long 1/4-20 stainless hex bolts. I dropped my phone in water, so everyone was having a hard time hearing me, but this certainly helps, now everyone can hear me much better and I can do other things while talking. Je referais le test et à plus haute vitesse. The lining is SO SOFT! After about 10 minutes riding I was confident I could go anywhere, any speed and on any terrain without ever having to worry about the phone. However, I should say the wiring inside is too small.