Stop Dog Barking Instantly - 3-in-1 Ultrasonic Repeller with Flashlight, Rechargeable Handheld Dog Training Device, No Shock, Ideal for Indoor & Outdoor Walks, Neighbor’s Dog Control

This device can emit a fixed frequency of 24kHz, which humans will not receive, but it is suitable for dogs. The device has no impact, vibration, or noise, and is harmless to your dog's ears, skin, and overall health, suitable for all sizes of dogs.
Remote control and portable design: Control range up to 33 feet (approximately 10 meters), suitable for outdoor and indoor use. Comes with a portable wristband for easy carrying and use at any time.
Night lighting function: independent lighting function, high brightness, long-range lighting, safe and worry free walking for dogs at night.
Convenient Charging: This device uses USB charging method, Type-C interface, rechargeable battery, and can last for 30 days after 5 hours of charging.
Multi functional dog training device: The device can not only train your dog, but also prevent other dogs from approaching you while walking, jogging, or cycling. Just press the button and point the device at the dog when it barks or approaches you, and the dog will stop their bad behavior