3-in-1 Dog Trainer utilizes cutting-edge technology, emitting high- frequency sound waves (10 kHz to 30 kHz) that regulate dog behavior without being audible to humans. But that's not all It also features a built-in flashlight for added visibility and a laser pointer to engage and tease your furry friend Safe and Pet-Friendly: Your pet's safety is our priority. The Dog Trainer is designed to be completely safe and humane, providing an effective solution for behavioral training without causing any harm to your beloved pet Long-Lasting Performance: Never worry about running out of power The 3-in-1 Dog Trainer boasts a remarkable battery life of more than 20 hours. Enjoy extended use without the hassle of frequent recharging Wide Range and Portable: Covering over 30 feet of range, this device is perfect for both indoor and outdoor use. Small and lightweight, the Dog Trainer easily fits into your pocket, making it a convenient and portable solution for training on the go. Bring peace and tranquility to your home with the 3-in-1 Dog Trainer With lanyard, charging cable. Product size: 12 * 4.7 * 3.4cm, battery 1200mAh, with LED flash light and laser light, can be used as a flashlight