1 powered by hand shaking ,need抰 battery, safety and convenience,energy saving and environment protection.it also has healthy function for promoting your blood circulation by long-term use 2 portable and streamlined design,it is a must when you are out 3 scientific design:you can choose one led or 3 led light by pressing a button. 4 power stronger and longtime lasting by adopting mini_structure and mini-generator. 5 adopting imported high lighting led ,energy saving,high efficiency and energy saving.it can light clearly up to 5 meters ahead at night. 6 long use life:led lamp can be used for 15000h.the battery can be charged for 600thousand times.and gear box can be used for one million times successively. 7 matching many kinds of connectors,ensuring it can charge all kinds mobile phones 8 it is an ideal power source when fieldwork,power off ,emergency or special circumstances.no matter how long it sleeps or how much power in ,it can resume to work status by shaking its arm. 9, Fm radio include.