Wasserkraft-Rechner

SN-777 Water Poweredcalculator . .It not need dry battery only add water in the device can working.And not produce the waster material, good for the environment..When It have no water you only add water when it have a little. It suitable for taken in the pocket,fashion and environment,good for da as the gift . Now we used our new water battery which can used more than 3 years , and we supply one year guarantee, and we have the patent of the water powered product in more than 15 country, we are the only company who have rights to produced the water powered product.size/pcs size/boxNu./boxnet/gross weight109*76*26mm 430*325*265mm100PCS6.2/8.8KGS