KEEP PET SAFETY During nocturnal activities, the glowing collars can effectively allow the traffic to see your pet and avoid potential pitfalls. Super bright, provides visibility of 500m. ADJUSTABLE SIZE Our led dog collar light length 27.6 inch, can be cut to resize 11 inch to 27.6 inch. The LED dog collar is very easy to cut to fit to size according to the dog's neck. LIGHTWEIGHT & WATER RESISTANT Lightweight silicone materials allow dogs to wear comfortably. Wet grass and light rain are not problems. EASY TO USE You can choose the flash modes( steady glowquick flashslow flashoff) according to different needs, and can be charged by USB after used up. ENERGYSAVING Charge about 1 hour, last 68 hours for quick flash, 810 hours for slow flash, 23 hours for steady glow. It also has three lighting options to choose. Easy adjustable length: the original length is 27.56 inches (70cm), you can cut it to any length you want High quality: Made of standard silicone + ABS materials, soft and safe USB rechargeable Very practical and easy Three flashing models: light fast / slow / continuous Waterproof: Rain waterproof, but please do not put it in the water Visibility: up to 500 m USB charging Very simple and practical: no batteries required. The collar can be charged with a mobile phone / smartphone / tablet and computer. Your best choices for your pet's safety Super bright, visible up to approx. 500 m. It can light up for up to approx. 5 hours when it flashes; Approx. 2 hours with continuous light. Cuttable Suitable for all size dogs and cats Original length is 27.56 inches (70cm), you can cut it to the size of your pet's neck with scissors great for all size dogs and cats. Operating time: Approx. 5 hours in flashing light Approx. 2 hours in continuous light Charging time: Approx. 45 minutes to 1 hour Delivery: 1 * Blue LED flashing dog collar 1 * USB cable Three adjustable flashes possible Fast blinking Flashing slowly Constant light It can adjust according to your desire and different situations.