Model Number= 3-Wheel: S39; 4-Wheel: S49 • Weight capacity: 300 lbs (136 kg) • Top speed: 4.3 mph for 3-wheel, 4.1 mph for 4-wheel • Ground clearance: 1.25 inches • Turning radius: 36.5 in (3-wheel) / 52.25 in (4-wheel) • Overall length & width: 40.25 in length, 19.25 in width • Tires: solid, 8 in size • Range per charge: varies from ~6 to ~14 miles depending on battery size and user weight • Total weight without batteries: 76.25 lbs (3-wheel), 81.5 lbs (4-wheel) • Seat type: padded molded plastic with black vinyl • Drive system: rear-wheel drive, single 24-volt DC motor • Braking: regenerative and electromechanical • Battery type: two 12-volt sealed lead-acid batteries • Maximum incline: 6° • Noise level: under 65 dB