The Simpson Professional Generator series features 3 models: SPG3645 (3,600 watts); SPG5568 (5,500 watts); and SPG7593E (7,500 watts). These generators are powered by Simpson engines with low-oil shutdown to protect them from damage. The SPG7593E includes an electric start one touch to provide hassle-free start-up. The series also features charging outlets, covered outlets for protection from harsh working environments, a steel-cage frame for added durability and strength, and an ergonomic folding handle for easy portability and compact storage. Simpson included a VFH meter for reliable maintenance updates. The Simpson Professional Generator series does not include a battery and is backed by a 36-month limited warranty. For more information, visit www.simpsoncleaning.com.