Onepalace LED Dog Safety Collar + LED Dog Leash USB Rechargeable No Batteries Required uper Bright LED's Glow & Flash Nylon 3 Modes Improved Dog Visibility & Safety & Fun (8 Colors 4 Sizes for Option) SAFETY FIRST - modern LED lights GLOW & FLASH brightly making your dog highly visible, designed to improve the safety of your dog at dusk & at night ECONOMICAL- it recharges quickly via USB cable by connecting to devices like Tablets, Laptops, PC's, Smart TV's, Games Consoles & Phone Chargers.No more wasting money on batteries - more eco-friendly & saves money HIGH QUALITY & NEW DESIGN- adjustable length, easy to put on & use, comply for your dog, 3 mode selection (Steady glow, rapid flash, slow flash), with a quick-release buckle, a protected USB charging port WEATHERPROOF - water-repellent, good for all weather conditions, it is lightweight, strong, durable HUSTON LOWELL - this collar with leash is the best gift for your pet, if you have any question, please feel free to contact us