Eco MP3 / Own generating MP3

Between age and sex often use MP3, They feels discomfort because the batteries are dead. A way of generating electricity The charger of MP3 ,own generating electricity, is play with clay. Then it can generating.
The arm strength exercises used in principle with the power of dynamometer ways of obtaining energy are self-Foot Lamps. Mp3-friendly self-development instead of traditional plastic, using non-toxic silicone rubber hand-rub it back after the round appearance can be maintained.