http://www.touristic-guide.com/ presented here will allow the production of 2.5W to 5W of energy. Called Estream, the device converts any type of moving water into stored energy. A total time of 4.5 hours are required in order to fully charge 6,400mAh of the built-in battery. This will let you charge every USB-connected mobile devices, like smartphones, tablets and GoPro cameras. Its high versatility comes from the fact the Estream has a modular design. With 24-hour stability and only 800g in weight, the device will become your favorite helper throughout the many adventures you plan.
Estream converts any type of moving water into stored energy to charge every usb-connected mobile devices.
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