1. USB powered, plug and play2. Voltage overload protection, environmental protection and energy saving3. Night light function, more convenient at night4. Frequency conversion & resonant sound waves, radial radiation type sound waves, good mosquito repellent effect5. Connect the mobile power supply for outdoor use6. Physical expulsion, safe for mothers and babies, non-toxic and harmless7. Without barriers, the mosquito repellent area can reach 50-100 square meters.8. Material: ABS9. Input: 5V/1A10. Power: 0.3W11. Weight: 15.8 grams