4x4 elektrorollstuehle

4wheel drive system , it's a crossover chair, it's all terrain chair.
it has very eco-friendly battery, silicone power battery, no pollution, no noise.
it can climb stair with max 25degree, and slope max 45degree, so it can span curbs, hills and wood roots .
it has synchro seat adjuting gradienter equipment, so the seat stays in the horizontal level all the times, it make you feel very safe and comfortable,
360 degree revolving, no turning radius, small size, working in very narrow space.
ce, iso is ok, fda is under way.
it's patented, so no one can copy it.