The Experimental EM-2 represents the highest experimental level of innovation, power and performance in rechargeable mower technology. Utilizing two long lasting but easily replaceable 12 volt SLA batteries, the EM-2 mows for a full hour on a charge. The EM-2 features the original Sunlawn flame hardened non-contact cutting system in a seven blade configuration. It quietly does a beautiful job of grooming all North American turf types including Bermuda, Zoysia, St. Augustine, Fescue, Bluegrass. The EM-2 is not meant to "power" its way through more grass than a manual mower, but for the person who wants a truly “perfect” appearance to their lawn with minimal pushing effort the EM-2 is an excellent choice.  The EM-2 is sold as "Experimental" such that if substantial improvements are offered in the mower during the 2 year warranty period Sunlawn may offer to replace the owner's original mower with the newer model.