HYmini is a device that makes use of the wind power to recharge it's integrated battery, and turn into a portable charger to charge almost all 5V digital devices. User can collect energy to the device when charging in motion, simply attach to his bicycle or armband to make good use of energy while running or biking. Another power source is from the solar panel that receive solar energy and transfer to HYmini. HYmini is a green product that does not need to change batteries, which eliminate the disposable of batteries problem. I was thinking if Hymini installs in the gadgets, and users do not have to worry about running out of battery. It would be an incredible product if you can just shake the gadgets continuously and battery will be restored. I believe this is a great product, but I am not sure if this is a functional product. To be honest I would rather put this in my bag (and to absorb energy through my bag) rather that holding it in you hand swing it around (it takes almost 4 hours to charge this device, that basically tell me to run for 4 hours to fully charged) So, i think the turbine can be eliminate and I prefer the solar panel for best use. However, HYmini's design is very simple and user-friendly, it also helps to promote the idea of using solar energy and motion as the battery source, which is very eco-friendly as well!