DEESEE(TM) Rechargeable USB Waterproof LED Flashing Light Band Safety Pet Dog Collar (Yellow) Uses high quality modern LED lights that glow brightly  One of the most effective high visibility dog safety collars available. One size fits all:Collar measures 50cm  Can be cut to any length using scissors to fit your pet! Perfect fit! 3 Light Settings - Slow flash, quick flash & steady glow (Easy push button) Rechargeable via Micro USB - Can be charged via Phone Chargers, Laptops, PC's, Tablets, Smart TV's Mains USB Power Adapters(Micro USB cable included) No more wasting money on batteries, less waste, eco-friendly and much better value for money than battery powered versions of this product.