Safety LED Dog Collar Visibility and safety: In low light conditions, the LED light helps keep your dog visible. The light is visible up to approximately 500 meters (1640 feet), depending on battery charge and surrounding conditions. Fit and material: The end of the tube can be cut to the desired length. It is easily cut with scissors because it is silicon rubber material, and it still works after cutting. Total length is 27.56 inches (70 cm). It fits dogs of various sizes, large enough for Labrador, hound, spaniel, German Shepherd, collie, wheaten terrier, Rottweiler, and other dogs. Modes and operation: Three flashing modes are available: quick flash, slow flash, and steady glow. To operate, press the on/off button: One press: flashing quickly Two presses: flashing slowly Three presses: steady light Four presses: off USB rechargeable design: No replaceable batteries required. Comes with a USB cable and can be recharged via any USB port or USBenabled device (such as a computer). Runtime is about 3 hours after a roughly 20minute charge. Use scenarios: Night walks or early morning strolls where visibility reduces risk from vehicles and pedestrians. Outdoor activities such as hiking or training in low light or dusk conditions, with adjustable brightness modes. Travel, crowded events, or dog parks in dim areas where easy identification and visibility are beneficial.