1. Material: plastic 2. Power supply: 1 9V battery (not included) 3. Use ultrasound to drive off nasty dog barking 4. Can control dog barking within 15 meters 5. 3 sensitivity adjustment levels (15-30KHZ) 6. Two-color battery low battery reminder 7. Waterproof and durable, safe and effective 8. Weight: about 150g 9. Size: about 11.4x6x4.3 cm
