["Versatile Light Modes: Equipped with a powerful flashing light it includes two settings always-light-on and fast-flashing to capture your dogs attention without startling or harming them" Dual Sonic Technology: Features dual ultrasound speakers emitting a pet-friendly high-pitched sound to reduce barking behaviors in dogs inaudible to most humans Portable and User-Friendly: Compact and easy to carry this device is perfect for use at home in the yard or during walks. Simple to operate with quick tangible results making training sessions stress-free Designed for Safety and Comfort: This pet-friendly device ensures a humane approach to training is trusted by pet owners to improve behavior without causing harm "Versatile Light Modes: Equipped with a powerful flashing light it includes two settings—always-light-on and fast-flashing—to capture your dogs attention without startling or harming them"]