The chair works great We used it to get My Mom from car to house up steep driveway and was used for walks. With a Allen key The controls can be put on either side I put them behind seat when My Mom could no longer use them They are now on Left side Model Invacare TDX SP Comes with. Tilting chair Includes Battery Charger Original invoice $9,886.30 Batteries Replaced 2 years old Only $1,600 OBO