Review on Max & Molly USB Rechargeable LED Safety Dog Collar Light - Ultra Bright, 100% Waterproof, Secure Stretch Silicone Band for Nighttime Walking, Running, Kayaking, and Biking by Rachel Lott

I bought MANY collars for my dog. This is the first one that really keeps up with my dog! The only thing I haven't tried yet is flooding the light completely with water. I'm sure once Rio finds a body of water I'll see if it's actually waterproof or not. This light is bright enough to be seen from a good distance. There are 4 lighting modes. The brightest one is almost too bright which is great!