Alfie Lifestyle Pet Accessory - Lighted Collar and Safety Flashing Charm Combo Designed to make your dog more visible in the dark. A must have for those who care about their pets. Improve your best friend's safety during evening walk. Alfie Lifestyle's flashing charm and lighted collar help keep you and your dog visible at night, on cloudy, rainy, or foggy days! It does more than just reflect light, it generates it's own. Super bright LED technology. The charm has three switches can be set to off, flash, or be on continuously. Strong, durable, comfortable and easily size-adjustable to fits all breeds. Flashing LED-illumination technology with high-reflect material. Visible from up to one mile at night, in low light and in no-light situations. Very easy switch to operate. Comes ready to go with the battery in place good for 150 hours and then it is easily replaceable. It is lightweight, water resistant, shock resistant. Please note that on long haired dogs, the hair can obstruct the collar and lights.