This G1/2 micro hydro generator provides you clean and renewable electricity. With the help of the regulator circuit inside, the output of this generator is stable at 3.6V. And the capacity of battery is improved from 300mAh to 700mAh compared to the old version. Electromagnetic compatibility (EMC) is the ability of electronic and electrical equipment and systems to operate without adversely affecting other electrical or electronic equipment OR being affected by other sources of interference such as power line transients, radio frequency (RF) signals, digital pulses, electrical machinery, lightning, or ...