This product adopts ultrasonic trajectory, effective dog training, cat driving, and lighting. It is easy to carry and is suitable for outdoor operation, field trip and security night patrol, and training for all kinds of dogs. Features: 1. Adopts ultrasonic trajectory, effective dog training, cat driving, and lighting. 2. Made of high quality material, tough and durable to use. 3. Superior and stable performance, low power and long service life. 4. Effective range of 5-6ft. 5. Easy to carry and is suitable for outdoor operation, field trip and security night patrol, and training for all kinds of dogs. Specification: Item Type: Ultrasonic Repeller Material: ABS / Plastic casing Light Mode: for lighting function I Mode: for training function II Mode: for driving function Battery: 9V battery (Not included) Color: Yellow Size: Approx. 12.5 * 11.4 * 4.2cm / 4.9 * 4.5 * 1.7in Weight: Approx. 116g / 4.1oz Package List: 1 * Ultrasonic Repeller 1 * Manual Note: 1. If the unit is not used, please switch on "II" mode. 2. Effect of the following situations are not significant: (1) Own dog, the dog knows that the owner will not harm it; (2) Dogs with their owners; Large trained dogs; (3) When the battery voltage is too low, the ultrasonic energy emitted by the product will be reduced; (4) In dog drive mode, due to the strong output power and high power consumption, please do not hold down the switch for a long time. Generally, press the switch for 3-5 seconds, and then press it after releasing the switch. (5) The ultrasonic power of this product is strong, please do not face the human ear when using.