1. The Dazer III ultrasonic device is a repellent for aggressive dogs, featuring an upgraded 3.0 version with dual ultrasonic speakers. 2. It is a powerful deterrent due to its ultrasonic range and sound pressure level, which remains inaudible to humans. The effective range is up to 10 meters, with optimal performance within 6 meters at full intensity. 3. You can jog, run, or bike on roads or trails without concern for approaching dogs. When the ultrasonic button is pressed, the device vibrates to confirm activation. 4. It includes USB charging with a low battery indicator. A full charge can last up to 30 days. The Dazer III is made from lightweight, impact-resistant materials. 5. Operation is simplepress one of the two buttons and aim toward the dog. Upon exposure to the ultrasonic sound, the dog is deterred from approaching. 6. The Dazer III offers three modes: **Ultrasound**: Choose from three frequency settings: *Stable*: 25 kHz continuous waves for prevention. *Irregular*: Waves varying between 2025 kHz for repelling. *Pulsed*: Sharp, pulsed waves for training. **Ultrasound + Light**: Combines ultrasonic frequencies with a flashing light. **Audible Sound**: Emits unpleasant tones to deter dogs.