The E55 provides a 20-foot zone of advanced mosquito protection and features a 5.5-hour battery, which can charge while operating to extend run time. It includes 12 hours of mosquito repellent and audio cues with LEDs to indicate battery life and protection status. The E55 offers 80% more coverage than the original line, is powered by a rechargeable lithium-ion battery, and provides up to 5.5 hours of protection per charge. The device repels mosquitoes without DEET and includes an easy-to-replace, unscented liquid-repellent cartridge. Independently tested and EPA-reviewed, it effectively repels mosquitoes, including those that may carry viruses like West Nile and Zika, making it safe for both people and pets.