Quantum Edge 3 Power Wheelchair Base. The design of the Edge® 3 is for the most advanced power chair experience ever! Upgraded SRS (Smooth Ride Suspension) provides a smooth, comfortable ride with advanced stability. Optional iLevel® is available at 7 km/h with up to 12″ of power adjustable seat height. Standard features include front and rear LED fender lights, a USB charger, and drive wheel colour accents. The Edge® 3 is available in a total of 20 colour options, including seven brand-new, bold colours.