High Visibility】Making your dogs be seen at night when dog walking and running. LED dog collar will provide the high visibility to walkers, joggers, cyclists, motorists. Special Reflective Strips, make sure that the LED dog collars can be seen even when the electricity runs out. Keeping your dog safe in the darkness, and you can find your dog easily in low light conditions. 【Premium Material】Illuminated dog collar is made of 100% Nylon webbing with double high-tensile stitching, which is lighter and tougher than ordinary collars. Lightweight LED dog collar for easy carrying and wearing, it can make your pet more comfortable. Easy to put on & off with a quick release buckle. Equipped with a sturdy D-ring, can be matched to your dog leash. 【3 Flash Modes】 Simple click to switch 3 different modes you want: fast flash, steady flash and constant. Omeril light up dog collar can be adjusted between S 30-40cm / M 40-50cm / L 50-60cm, please choose the right size accord to your lovely pet's neck. 【USB Rechargeable】No need to replace battery. OMERIL LED dog collar comes with the USB cable which is compatible with any USB devices. It only takes 1 hour to fully charge and last 8 hours in constant mode. NOTE: PLEASE use 5V USB adaptor only. 【Excellent Waterproof】OMERIL LED dog collar designed with waterproof function. Suitable for all weather conditions, but can't soak in water completely. So your dog can enjoy various kinds of outdoor activities freely. Note: Please make sure the charge port is covered tightly.