Product Description: 1. Intelligent constant temperature heating, using high efficient heating technology to activate the sheet, maintain constant temperature after reaching the set temperature, effective and safe shedding. 2. can be used in a variety of scenarios, suitable for outdoor activities, hiking, backpacking, camping, fishing, backyard and so on. 3. replaceable inner core, easy to replace and convenient to use. 4. Easy to use: just connect the electronic flight controller to a power outlet. 5. Easy to carry: Rechargeable USB is lightweight and compact, easy to carry. Measures 7.7 cm x 4.8 cm x 2.3 cm / 3.03 inches x 1.89 inches x 0.91 inches. Package Included: 1x Mosquito RepellentNote Note: Due to manual measurement and different monitors, there may be a slight error.