The loud sound allows you to fully enjoy every music you like, The preferred mini speaker for cycling, walking and climbing. The mini waterproof speaker is fully charged and can be used for 8-12 hours, you can enjoy cycling and hiking without worrying about running out of power. The speaker holder for bike is easy to install and operate, so you don't have to worry about not being able to grasp the frame. When you get this little bluetooth speaker, you can enjoy hands free phone calls for safe driving, or while doing chores, or even in the shower.at the same time it equipped with a bicycle stand and a carabiner, you can use it on bicycles, backpacks, hooks, etc.