The Invacare Pronto M51 Power Wheelchair is designed for use by individuals with lower extremity, mobility, or severe physical disabilities or spinal cord injury. FRAME (HxLxW): 35 to 37 x 34 to 40 x 24 inches. Power base with six wheels for stability and a tight overall turning radius of 21.5 inches for accessability. The chair comes in a choice of candy red or deep blue shroud colors.CONTROLS: Fully programable MKIV-RII electronics for precise driver control with an adjustable joystick mount. CWD: The center-wheel drive positions the drive wheels directly beneath the individual's center of gravity. SEAT: The van-style seat adjusts from 18 inches to 20 inches wide, a depth of 16 inches to 20 inches, and a back height of 18 inches. The adjustable back seat has a seat width of 16 inches to 20 inches, a depth of 16 inches to 18 inches, and a back height of 16 to 20 inches. ARMRESTS: Flip-up height- and width-adjustable arms. BRAKES: Regenerative braking and automatic motor locks. CASTERS: Front and rear casters are 6 inches x 1.3 inches. WHEELS: Drive wheels are 10.5 inches x 3.5 inches. POWER: 350-watt, high torque motor for reliable performance. An on-board 3 amp charger is included. SPEEDS: Maximum speed is 3 miles per hour, with an incline capability of 9 degrees. SureStep technology enables negotiating thresholds and transitions up to 2 inches high while maintaining the stability of six wheels on the ground. CAPACITY: 300 pound weight capacity. WEIGHT: 192 pounds with battery and 145 pounds without battery. WARRANTY: Base frame and seat frame have warranties for 60 months; the electronics and motor/gearbox have 12-month warranties.