For the backyard and beyond, the Thermacell E-series is easy to use and provides hours of scent-free, mess-free mosquito defense. The largest area repellent zone available from a single repeller, it provides a 6 m (20 ft.) zone of advanced mosquito repellent. Features up to a 9-hour battery. This portable and compact repeller provides ambient dimmable light to create a warm, comfy space in your patio, deck, at the cottage, and more. Audio cues and LEDs let you know you’re protected and how much battery life remains. Keep mosquitoes away with the simple push of a button.