Basecamp Bike Helmet, Bicycle Helmet CPSC Certified Cycling/Climbing Helmet BC-069 with Detachable Magnetic Goggles Visor&LED Back Light&Portable Backpack Adjustable for Men/Women Mountain

Batty power may be exhausted during transportation,so we need to replace the battery if the light does't light when we get it.And the battery replacement instrustion is very clear. As picture, firstly,Remove the LED light from the back of the helmet;Secondly,open the cover of the LED light;Thirdly, use tool to remove the chip of the LED light;Forthly,use the tool to remove the battery and replace it with the CR1632 backup battery;Finally, put the chip back,cover the cover and replace the LED light.

It is safety for riders when I wear the Basecamp bike helmet with the LED light. A wide angle visual design provides more visibility than many lights on the market, which makes you clearly recognized. This kind of safety light is a safety choice for riders, I think.

I love the LED Light with 3 lighting modes-steady, slow flashing and fast flashing, makes me not only cool but also safety when riding at night.

Helmet is great but easily lost my light in the back. Ordered 2 replacement lights but both of the lights I received (after waiting a month to get them) did not fit the helmet at all. Little bit disappointed in this but guess I'll just end up returning them and just use the helmet without it.Edit: Lights have been replaced a little bit ago but just now getting around to updating the review. It took less time to get the lights then the first time which was awesome and the lights fit at this point. Thank you for all the help and getting them to me so quickly.