AVOID YOUR DOGS HIT BY CAR --- LED dog collar is so bright and easily seen by the drivers(car drivers, walkers, joggers, cyclists, motorists, etc) at night for far distances. Its made of nylon webbing with a light guide which improves your dog visibility and safety in the dark. ANTI-LOST, RUST-PROOF AND WATERPROOF --- With 3 flashing modes, you may find your pets easily in the dark by these light-up dog collars. Water-repellent and rust-proof design make this glowing dog collar adapt to most weather conditions. But must keep the battery case dry and do not use it underwater. FAST CHARGING& LONGER LASTING --- The lighted dog collar can be recharged by Micro USB cable with daily use devices. Charge time: 2 hours. Usage time:8 hours for quick flash, 12 hours for slow flash, 10 hours for steady glow. MORE ROBUST DESIGN --- Reinforced edging at the edge of the reflective dog collar, no pilling and breakage even outdoors. When these light-up dog collar's battery runs out, the reinforced edging is reflective when headlight shots. ADJUSTABLE DOG COLLAR --- Each size of the light up dog collars can be adjusted with a buckle. Also it has a Heavy-Duty D-ring can be faultlessly connect with our led dog leash.