There are lots of products or accessories to ride bicycles safely such as lights, timers, speedometers …etc. and to use or operate these products, we need batteries. But batteries have very short durability which is inconvenient for riders to change them every time when they get run-out.
ASSITER can replace this inconvenience by the kinetic energy of bicycles that recharges itself. Thus, riders neither to switch-on lights nor attach timers during they drive.