I have taken very good care of this chair and it has served me well. It was serviced on 10/10/2020. It has two new batteries, new motors, a new footplate and the controls were adjusted. The Vision Ultra is a compact and versatile power wheelchair. It has 6 wheels on the ground and has the stability and durability to withstand the test of time. This unit features 14” drive wheels, a 300 pound capacity and a seat-to-floor height starting at 16.5”. It has a Swing-away bracket on the right armrest, adjustable height armrests, adjustable seat height and an adjustable headrest. It has a top speed of 15 mph (though I have never driven it that fast) and a range of 12 miles. This chair is very comfortable. It's very durable and capable on rough terrain and steep grades. I've always felt safe when operating it. The controls are very simple and easy to use. when the operator releases the control toggle the chair stops immediately.