1. New and improved. you say. We listened. Our new lights are stronger, bigger, thicker and more durable. Be ready to tackle any demanding task at hand.2. Super bright and easy to use. Marvel at this little powerhouse of lightThis silicone LED collar light for dogs is perfect for night walks. Visibility up to mile. Duration up to 200 hours. This baby is part of the Energizer Bunny, we're sure of that. There are three modes: always on, slow flashing and fast flashing. Easily press on/off. Anything can be used3. Waterproof. Literally. in all aquatic environments. From playing in the lake to swimming in the sea, we've got you covered.4. Include extra battery. Comes with "button" battery and backup battery. Easy to replace for long term use. Non-toxic metal. Certified free of lead, cadmium and mercury. Non-toxic silicone case. D Led , Suitable For Dog Collar At . 2 Pieces With Dog Collar Lamp.