1. Ultrasonic physical expulsion2. Wide-angle coverage, compact and portable3. Universal for pets, widely applicable4. Hanging neck design, there are holes for tying ropes5. Back clip design, carry it with you, deworming at any time6. Convenient battery replacement, small drawer design on the back7. Intelligent high frequency chip, stable operation, quiet and energy saving8. One-button intelligent operation, more user-friendly9. Automatic timing shutdown, long press for 0.9 seconds to power on, timing 7.3 hours to automatically shutdown10. Power supply mode: 2025 button battery (not included in the product)11. Input voltage: 3V12. Working current: 300mA13. Rated power: 0.9W14. Dimensions: 57x34x16mm

http://olla.gr/ts-07-08-outdoor-portable-ultrasonic-children-mosquito-repellent-buckle-yellow/